WO2021200990A1 - Yfi構造を有するゼオライト組成物、炭化水素吸着剤及び炭化水素の吸着方法 - Google Patents
Yfi構造を有するゼオライト組成物、炭化水素吸着剤及び炭化水素の吸着方法 Download PDFInfo
- Publication number
- WO2021200990A1 WO2021200990A1 PCT/JP2021/013610 JP2021013610W WO2021200990A1 WO 2021200990 A1 WO2021200990 A1 WO 2021200990A1 JP 2021013610 W JP2021013610 W JP 2021013610W WO 2021200990 A1 WO2021200990 A1 WO 2021200990A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- composition
- yfi
- zeolite
- alkali metal
- hydrocarbon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
- C01B39/46—Other types characterised by their X-ray diffraction pattern and their defined composition
- C01B39/48—Other types characterised by their X-ray diffraction pattern and their defined composition using at least one organic template directing agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9481—Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start
- B01D53/9486—Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start for storing hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
- B01J20/186—Chemical treatments in view of modifying the properties of the sieve, e.g. increasing the stability or the activity, also decreasing the activity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/2803—Sorbents comprising a binder, e.g. for forming aggregated, agglomerated or granulated products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
- B01J20/28057—Surface area, e.g. B.E.T specific surface area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3007—Moulding, shaping or extruding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3021—Milling, crushing or grinding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3085—Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
- B01J20/3204—Inorganic carriers, supports or substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3234—Inorganic material layers
- B01J20/3236—Inorganic material layers containing metal, other than zeolites, e.g. oxides, hydroxides, sulphides or salts
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
- C01B39/46—Other types characterised by their X-ray diffraction pattern and their defined composition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features
- F01N13/16—Selection of particular materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0835—Hydrocarbons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/101—Three-way catalysts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
- B01D2253/1085—Zeolites characterized by a silicon-aluminium ratio
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/112—Metals or metal compounds not provided for in B01D2253/104 or B01D2253/106
- B01D2253/1122—Metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/202—Alkali metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/202—Alkali metals
- B01D2255/2022—Potassium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/202—Alkali metals
- B01D2255/2025—Lithium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/202—Alkali metals
- B01D2255/2027—Sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/912—HC-storage component incorporated in the catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/42—Materials comprising a mixture of inorganic materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2370/00—Selection of materials for exhaust purification
- F01N2370/02—Selection of materials for exhaust purification used in catalytic reactors
- F01N2370/04—Zeolitic material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2510/00—Surface coverings
- F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
- F01N2510/068—Surface coverings for exhaust purification, e.g. catalytic reaction characterised by the distribution of the catalytic coatings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the present disclosure relates to a zeolite composition having a YFI structure, a hydrocarbon adsorbent, and a method for adsorbing a hydrocarbon.
- Exhaust gas emitted from internal combustion engines used in moving objects such as automobiles and ships contains a large amount of hydrocarbons.
- Hydrocarbons discharged from the internal combustion engine are purified by a three-way catalyst. Since a temperature environment of 200 ° C or higher is required for the three-way catalyst to function, hydrocarbons are adsorbed by the hydrocarbon adsorbent in the temperature range where the three-way catalyst does not work, such as during so-called cold start, and the three-way catalyst is used. Hydrocarbons are released from the adsorbent in the temperature range where is started to function, and this is decomposed and purified by a three-way catalyst.
- a composition containing zeolite is generally used as the hydrocarbon adsorbent, but in the composition, if the adsorbed hydrocarbon is desorbed at a specific temperature at a time, the latter three elements are used. The load on the catalyst increases. Therefore, there is a demand for a composition having the property of slowly desorbing hydrocarbons with increasing temperature.
- Patent Document 1 proposes an HC adsorbent composed of an alkali metal, one or more metals of alkaline earth metals, Ag, and a molecular sieve as the hydrocarbon adsorbent.
- Patent Document 1 an improvement in the hydrocarbon desorption start temperature can be seen.
- the hydrocarbon is rapidly desorbed (that is, the desorption temperature range of the hydrocarbon is narrow), and there is a problem that the load on the subsequent three-way catalyst is large.
- the present inventors examined the hydrocarbon adsorption characteristics (for example, hydrocarbon desorption temperature range) of various zeolite compositions. As a result, it was found that a specific composition has a property of slowly desorbing a hydrocarbon (a wide range of hydrocarbon desorption temperature range) after reaching a hydrocarbon desorption start temperature.
- the alkali metal is at least one selected from the group of lithium, sodium, potassium, rubidium and cesium.
- the zeolite having a YFI structure is a zeolite having a YFI structure in which the molar ratio of silica to alumina (SiO 2 / Al 2 O 3) is 5 or more and 400 or less.
- composition according to. [7] A hydrocarbon adsorbent containing the composition according to any one of the above [1] to [6].
- [8] A method for adsorbing a hydrocarbon using the hydrocarbon adsorbent according to the above [7].
- composition of the present disclosure will be described with reference to an example of an embodiment.
- the description of "-" in the range in the present disclosure includes the values of the upper end and the lower end, and for example, the description of 1 to 40% is synonymous with 1% or more and 40% or less.
- the composition of the present disclosure is a composition containing 1 to 40% by mass of an alkali metal and 99 to 60% by mass of a zeolite having a YFI structure with respect to 100% by mass of the composition.
- the composition of the present disclosure preferably contains 2 to 40% by mass of an alkali metal with respect to 100% by mass of the composition, and has a YFI structure, in that it is excellent in the property of slowly desorbing hydrocarbons.
- the composition contains 98 to 60% by mass of the zeolite having, with respect to 100% by mass of the composition, and more preferably 5 to 40% by mass with respect to 100% by mass of the composition.
- zeolite having a YFI structure with respect to 100% by mass of the composition 95-60% by mass of zeolite having a YFI structure with respect to 100% by mass of the composition, and more preferably 10 to 40% by mass of alkali metal with respect to 100% by mass of the composition.
- the hydrocarbon adsorbent containing the composition of the present disclosure has high heat resistance, and the desorption of hydrocarbons becomes gradual with respect to temperature.
- zeolite is a compound in which a skeleton atom (hereinafter, also referred to as “T atom”) has a regular structure via oxygen (O), and the T atom is a metal atom, a semi-metal atom or other.
- T atom a skeleton atom
- O oxygen
- the T atom is a metal atom, a semi-metal atom or other.
- the metal atom include any one or more selected from the group of iron (Fe), aluminum (Al), gallium (Ga), tin (Sn) and titanium (Ti), boron (B), and other transition metal elements.
- metalloid atom any one or more selected from the group of boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb) and tellurium (Te) can be exemplified.
- Phosphorus (P) can be exemplified as another atom.
- the zeolite in the present disclosure may be composed of metallosilicates such as ferrosilicates and galosilicates, and zeolite-related substances such as SAPO (silicate aluminosilicate) and AlPO (aluminosilicate). ..
- metallosilicates such as ferrosilicates and galosilicates
- zeolite-related substances such as SAPO (silicate aluminosilicate) and AlPO (aluminosilicate).
- the zeolite having a YFI structure contained in the composition of the present disclosure is preferably a crystalline aluminosilicate having a YFI structure.
- Crystalline aluminosilicates have a crystal structure consisting of repeating networks of aluminum (Al) and silicon (Si) via oxygen (O).
- the skeletal structure of zeolite (used interchangeably with the crystal structure and hereinafter also referred to as “zeolite structure”) is a structure code defined by the Structure Communication of the International Zeolite Association (hereinafter, simply "structural code”). It is a skeletal structure specified by (also referred to as)), and is referred to as an XRD pattern (hereinafter, also referred to as “reference pattern”) of each zeolite structure described in Crystal of simulated XRD power patterns for zeolites and Fifth revised edition (2007). , Can be identified by comparison with the XRD pattern of the target zeolite.
- the XRD pattern may be obtained by XRD measurement under the following conditions.
- a zeolite having a specific zeolite structure is also referred to as a "-type zeolite", and for example, a zeolite having a YFI structure, preferably a zeolite having only a YFI structure is also referred to as a YFI-type zeolite.
- the composition of the present disclosure contains an alkali metal.
- the alkali metal include one or more selected from the group of lithium, sodium, potassium, rubidium, cesium and francium, and one or more selected from the group of sodium, potassium, rubidium and cesium.
- the alkali metal contained in the compositions of the present disclosure is preferably one or more selected from the group of lithium, sodium, potassium, rubidium and cesium, and is rubidium and / or cesium (that is, at least one of rubidium and cesium). Is more preferable, and cesium is further preferable in that the composition of the present disclosure has high durability in a high temperature and high humidity environment. In addition, it is preferably at least one of sodium and potassium because it can be obtained at low cost.
- the alkali metal may be two or more kinds, preferably 2 or more selected from the group of lithium, sodium, potassium, rubidium and cesium, more preferably 2 or more selected from the group of sodium, potassium, rubidium and cesium, and more preferably rubidium. And cesium are preferred.
- the alkali metal contained in the composition of the present disclosure is not particularly limited, but for example, those contained in the zeolite itself obtained at the time of hydrothermal synthesis (after the crystallization step) described later, the above-mentioned zeolite. Contained by impregnation treatment, contained in zeolite impregnated with alkali metal in addition to the above-mentioned zeolite, or contained in zeolite impregnated with alkali metal after ion exchange with hydrogen ion or ammonium ion. The ones that have been used can be mentioned.
- the above-mentioned alkali metal refers to an alkali metal element, and the elemental state thereof is not particularly limited, but an ionic state is preferable.
- the amount of alkali metal in the present disclosure can be measured by an inductively coupled plasma emission spectroscopic analysis (ICP-AES) method.
- ICP-AES inductively coupled plasma emission spectroscopic analysis
- the molar ratio of silica to alumina (hereinafter, also referred to as “SiO 2 / Al 2 O 3 ratio”) of the zeolite having a YFI structure (YFI type zeolite) contained in the composition of the present disclosure is, for example, 5 or more and 400.
- the following are mentioned, and 5 or more and 200 or less are preferable, 5 or more and 100 or less are more preferable, and 5 or more and 50 or less are particularly preferable, because they are excellent in the property of slowly desorbing hydrocarbons.
- the YFI-type zeolite is excellent in the property of slowly desorbing hydrocarbons.
- the BET specific surface area is preferably 200 m 2 / g or more and 800 m 2 / g or less, and 300 m 2 / g or more and 700 m 2 /. It is more preferably g or less.
- the YFI-type zeolite preferably has an XRD pattern containing at least the following XRD peaks.
- the XRD pattern may include each peak in the above table, and may include other peaks.
- the YFI-type zeolite contains at least the following XRD peaks.
- composition of the present disclosure may contain components other than the above.
- the components other than the above are not particularly limited, and examples thereof include a binder and the like.
- the composition of the present disclosure includes a crystallization step of crystallizing a composition containing a silica source, an alumina source, an alkali source, and water (hereinafter, also referred to as “raw material composition”), and an alkali containing an alkali metal. It can be obtained by a production method having a metal-containing step. At the same time, the production method also corresponds to the production method of YFI-type zeolite contained in the composition of the present disclosure.
- a structure-directing agent hereinafter, also referred to as “SDA” can be additionally used as needed, and it is preferable not to use SDA because the manufacturing operation is simplified. It is preferable to use SDA because the range of manufacturing control can be expanded.
- the silica source is at least one of silica and a precursor thereof, and examples thereof include at least one of the group consisting of colloidal silica, amorphous silica, sodium silicate, tetraethyl orthosilicate and aluminosilicate gel, among these. Colloidal silica or amorphous silica is preferred.
- the alumina source is at least one of alumina and a precursor thereof, and examples thereof include at least one of the group consisting of aluminum nitrate, aluminum sulfate, sodium aluminate, aluminum hydroxide, aluminum chloride, aluminosilicate gel and metallic aluminum. Of these, aluminum hydroxide or aluminum sulfate is preferable.
- Alkali sources include, for example, at least one of the group consisting of various salts such as lithium, sodium, potassium, rubidium, cesium, francium, magnesium, calcium, strontium, ammonium hydroxides, halides and carbonates. Of these, hydroxides of sodium, potassium, or ammonium are preferred.
- Examples of the structure-directing agent (SDA) include dimethyldipropylammonium salt (hereinafter, also referred to as “Me 2 Pr 2 N +”).
- the dimethyldipropylammonium salt is not particularly limited, and examples thereof include dimethyldipropylammonium hydroxide, dimethyldipropylammonium chloride, and dimethyldipropylammonium bromide.
- zeolite seed crystals it is desirable to further add zeolite seed crystals to the raw material composition.
- the seed crystal By using the seed crystal, the crystallization rate of zeolite is increased, the time in zeolite production can be shortened, and the yield is improved.
- seed crystal of zeolite As the seed crystal of zeolite, it is desirable to use a seed crystal of zeolite which is an aluminosilicate having an LTL, LTA, MOR, MFI, BEA, FAU, CHA or YFI structure.
- the SiO 2 / Al 2 O 3 molar ratio in the zeolite seed crystal is preferably 2 to 100, more preferably 3 to 60.
- the amount of zeolite seed crystals added is preferably small, but in consideration of the reaction rate, the effect of suppressing impurities, etc., it is preferably 0.1 to 60% by mass with respect to the silica component contained in the raw material composition. It is desirable, and more preferably 0.5 to 40% by mass.
- composition can be exemplified as a preferable composition of the raw material composition.
- the raw material composition is crystallized by hydrothermal treatment.
- the conditions for hydrothermal treatment are not particularly limited, and examples thereof include the following conditions.
- Crystallization temperature 140 ° C or higher and 180 ° C or lower Crystallization time: 1 to 10 days
- Crystallization pressure The raw material composition is crystallized by the crystallization step of the self-sustaining pressure or higher to obtain YFI-type zeolite. After the crystallization step, the obtained YFI-type zeolite may be subjected to each step of recovery, washing, drying, and calcination by any method, and further, dealuminated to SiO 2 / Al 2 O.
- the 3 ratio may be any value.
- the raw material composition containing SDA is crystallized, it is preferable to remove SDA in the YFI-type zeolite by subjecting it to a firing step after the crystallization step because it is excellent in the property of slowly desorbing hydrocarbons. ..
- the firing process is a process of removing SDA in zeolite.
- the firing conditions are arbitrary, and examples of the firing conditions include a firing temperature of 400 ° C. or higher and 800 ° C. or lower, and a firing time of 0.5 hours or more and 12 hours or less in an oxidizing atmosphere.
- the alkali metal-containing step is a step for bringing the alkali metal into contact with the YFI-type zeolite obtained in the crystallization step and making the zeolite contain an alkali metal.
- the alkali metal in the alkali metal-containing step, is contained so as to intentionally cause a state in which the alkali metal is not coordinated with respect to a part of the ion exchange site (alkali metal coordination site) in the YFI type zeolite. Thereby, at least a part of the alkali metal contained in the obtained composition can be in an ionic state.
- the alkali metal to be contained is not particularly limited, and one or more selected from the group of lithium, sodium, potassium, rubidium, cesium and francium, one or more selected from the group of sodium, potassium, rubidium and cesium, and further.
- Examples include sodium, potassium, rubidium or cesium. Rubidium or cesium is preferable, and cesium is more preferable, because it is excellent in the property of slowly desorbing hydrocarbons.
- the alkali metal may be two or more kinds, and at least one kind of the group consisting of sodium, potassium, rubidium and cesium is mentioned, at least one of rubidium or cesium is preferable, and cesium is more preferable.
- the zeolite contains lithium, sodium, potassium, rubidium, cesium or francium
- an inorganic acid salt and at least one of the group consisting of sulfates containing lithium, sodium, potassium, rubidium, cesium or francium, nitrates, acetates and chlorides.
- the alkali metal-containing step may be a method in which the alkali metal is contained in at least one of the ion exchange sites and pores of the zeolite.
- a specific method at least one of the group consisting of an ion exchange method, an evaporative drying method and an impregnation carrying method can be mentioned, an impregnation carrying method, and a method of mixing an aqueous solution containing an alkali metal compound and zeolite.
- an impregnation method such as an impregnation carrying method
- the step is also referred to as an "alkali metal impregnation step").
- the alkali metal-containing step it is preferable to contain the alkali metal so as to intentionally cause a state in which the alkali metal is not coordinated with respect to a part of the ion exchange site (alkali metal coordination site) in the YFI type zeolite.
- a method is not particularly limited, but for example, the method described in the examples of the present disclosure (a method in which zeolite is used as a fixed bed and a solution of an alkali metal is circulated through the fixed bed to contain an alkali metal). ) Can be exemplified.
- the production method of the present disclosure may include at least one or more steps of a washing step, a drying step, or an activation step after the alkali metal-containing step.
- any cleaning method can be used for the purpose of removing impurities and the like of the YFI-type zeolite.
- the YFI-type zeolite impregnated with an alkali metal may be washed with a sufficient amount of pure water.
- the drying step after the alkali metal-containing step is aimed at removing water, and can be exemplified by treating (drying) at 100 ° C. or higher and 200 ° C. or lower, preferably 110 ° C. or higher and 190 ° C. or lower in the air.
- the processing time is arbitrary, but 1 hour or more and 2 hours or less can be exemplified.
- the activation step after the alkali metal-containing step is a step of removing organic substances of the YFI-type zeolite, and can be exemplified by treating (activating) at a temperature of more than 200 ° C. and 600 ° C. or lower in the atmosphere. , 300 ° C. and preferably 600 ° C. or lower.
- the processing time is arbitrary, but 1 hour or more and 2 hours or less can be exemplified.
- composition of the present disclosure can be used as a hydrocarbon adsorbent containing the composition.
- the hydrocarbon adsorbent can be used in a method for adsorbing a hydrocarbon.
- the hydrocarbon adsorbent of the present disclosure may have any shape depending on the intended use, and preferably at least one of powder and a molded product can be mentioned.
- Specific examples of the shape of the molded body include at least one of a group consisting of a spherical shape, a substantially spherical shape, an elliptical shape, a disk shape, a columnar shape, a polyhedral shape, an indefinite shape, and a petal shape.
- the above hydrocarbon adsorbent can be mixed with a solvent such as water or alcohol to form a slurry, and the slurry can be coated on a base material to form an adsorbent member.
- the above hydrocarbon adsorbent may be mixed with a binder if necessary and molded by any method.
- the binder is, for example, at least one of the group consisting of silica, alumina, kaolin, attapargite, montmorillonite, bentonite, aloen and sepiolite.
- the molding method for example, at least one of a group consisting of rolling granulation molding, press molding, extrusion molding, injection molding, casting molding and sheet molding can be mentioned.
- the hydrocarbon adsorbent of the present disclosure can adsorb hydrocarbons by a method having a step of bringing the hydrocarbon-containing fluid into contact with the hydrocarbon adsorbent of the present disclosure.
- hydrocarbon-containing fluid examples include a hydrocarbon-containing gas or a hydrocarbon-containing liquid.
- the hydrocarbon-containing gas is a gas containing at least one type of hydrocarbon, and is preferably a gas containing two or more types of hydrocarbons.
- the hydrocarbon contained in the hydrocarbon-containing gas includes at least one of the group consisting of paraffin, olefin and aromatic hydrocarbon.
- the hydrocarbon may have 1 or more carbon atoms, and preferably 1 or more and 15 or less carbon atoms.
- the hydrocarbon contained in the hydrocarbon-containing gas is composed of methane, ethane, ethylene, propylene, butane, linear paraffin having 5 or more carbon atoms, linear olefin having 5 or more carbon atoms, benzene, toluene and xylene.
- At least two of the group consisting of methane, ethane, ethylene, propylene, butane, benzene, toluene and xylene preferably at least one of the group consisting of methane, ethane, ethylene and propylene. More preferably, it is a species and at least one species in the group consisting of benzene, toluene and xylene.
- the hydrocarbon-containing gas may contain at least one of the group consisting of carbon monoxide, carbon dioxide, hydrogen, oxygen, nitrogen, nitrogen oxides, sulfur oxides and water.
- a combustion gas such as an exhaust gas of an internal combustion engine can be mentioned.
- the contact temperature in the step is room temperature to 200 ° C.
- composition analysis A sample solution was prepared by dissolving the sample in a mixed aqueous solution of hydrofluoric acid and nitric acid.
- the sample solution was measured by inductively coupled plasma emission spectroscopy (ICP-AES) using a general ICP device (device name: OPTIMA5300DV, manufactured by PerkinElmer). From the obtained measured values of Si, Al and alkali metals (Cs and Na, etc.), the SiO 2 / Al 2 O 3 molar ratio of the sample and the mass% of the alkali metal were determined.
- ICP-AES inductively coupled plasma emission spectroscopy
- Example 1 Synthesis of zeolite having YFI structure
- Colloidal silica AS-40 manufactured by GRACE
- Y-type zeolite product name: HSZ-350HOA, manufactured by Tosoh
- Me 2 Pr 2 NOH, NaOH, KOH and H 2 O are mixed and have the following molar composition. The composition was obtained.
- the obtained raw material composition was filled in an autoclave and crystallized at 160 ° C. for 6 days. After crystallization, a calcined product calcined in the air at 550 ° C.
- a 20% ammonium chloride aqueous solution having a liquid amount of 30 mol equivalents of NH 4 which is a large excess with respect to the Al amount of the calcined product are prepared.
- the mixture was mixed, and the mixed aqueous solution was stirred at 80 ° C. for 24 hours and then filtered by repeating the operation of stirring and mixing twice, and then dried in the air at 110 ° C. overnight.
- a SiO 2 / Al 2 O 3 is 18, cation type was obtained YFI type zeolite is a type 4 NH.
- the concentrations of Na and K in the obtained YFI-type zeolite were below the detection limit.
- the impregnation was performed by mixing the YFI-type zeolite obtained in advance with water and then filtering with a funnel to prepare a cake of the obtained zeolite. After flowing the above-mentioned cesium chloride aqueous solution through the cake, the cake was further washed with water at 60 ° C., which is 10 times the amount of the obtained YFI-type zeolite. After washing, it was impregnated with alkali metal (Cs) by drying in the air at 110 ° C. to obtain the composition of this example. ICP analysis was performed on the obtained composition, and the alkali metal (Cs in this example) content (mass%) in the composition was determined.
- Cs alkali metal
- Example 2 The crystallized product (calcined product) calcined in the air at 550 ° C. according to Example 1 was mixed with 0.5N hydrochloric acid 30 times by mass, left to stir at room temperature for 1 hour, and filtered and washed. Then, this was stirred and mixed with a 20% aqueous ammonium chloride solution in the same manner as in Example 1, and dried in the air at 110 ° C. overnight. Thus, a SiO 2 / Al 2 O 3 is 32, cation type was obtained YFI type zeolite is a type 4 NH.
- composition of this example was obtained by impregnating with an alkali metal (Cs) by the same method as in Example 1.
- the alkali metal (Cs in this example) content (mass%) in the composition was determined.
- Example 3 The following raw material composition was obtained in the same manner as in Example 1 except that the composition of the raw material composition was adjusted to the following molar composition.
- the obtained raw material composition was filled in an autoclave and crystallized at 160 ° C. for 42 hours.
- the calcined product obtained by calcining this at 550 ° C. in the air was subjected to stirring and mixing treatment with a 20% ammonium chloride aqueous solution, and then dried overnight at 110 ° C. in the air.
- a SiO 2 / Al 2 O 3 18.0, cationic type to obtain a YFI type zeolite is a type 4 NH.
- Example 2 Cs impregnation treatment was carried out in the same manner as in Example 1 to obtain a YFI-type zeolite having SiO 2 / Al 2 O 3 of 18.0 and a cation type of Cs type, which was used as the composition of this example. And said.
- Example 4 The following raw material composition was obtained in the same manner as in Example 1 so that the composition of the raw material composition had the following molar composition.
- the obtained raw material composition was filled in an autoclave and crystallized under rotating conditions of 160 ° C., 36 hours and 250 rpm. The calcined product obtained by calcining this at 550 ° C.
- a SiO 2 / Al 2 O 3 is 19.1
- cationic type to obtain a YFI type zeolite is a type 4 NH.
- Example 5 The fired product obtained in the same manner as in Example 4 was mixed with 5.7 mass times 0.34N hydrochloric acid, stirred at room temperature for 1 hour, and filtered and washed. Then, this was stirred and mixed with a 20% aqueous ammonium chloride solution in the same manner as in Example 1, and dried in the air at 110 ° C. overnight.
- a SiO 2 / Al 2 O 3 is 24.4
- cationic type to obtain a YFI type zeolite is a type 4 NH.
- Example 2 Cs impregnation treatment was carried out in the same manner as in Example 1 to obtain a YFI-type zeolite having SiO 2 / Al 2 O 3 of 24.4 and a cation type of Cs type, which was used as the composition of this example. And said.
- Example 6 The fired product obtained in the same manner as in Example 4 was mixed with 5.7 mass times 1.02N hydrochloric acid, left to stir for 18 hours at room temperature, and filtered and washed. Then, this was stirred and mixed with a 20% aqueous ammonium chloride solution in the same manner as in Example 1, and dried in the air at 110 ° C. overnight. Thus, SiO 2 / Al 2 O 3 is 41.3, cation type was obtained YFI type zeolite is a type 4 NH.
- Example 2 Cs impregnation treatment was carried out in the same manner as in Example 1 to obtain a YFI-type zeolite having SiO 2 / Al 2 O 3 of 41.3 and a cation type of Cs type, which was used as the composition of this example. And said.
- Example 7 The calcined product obtained in the same manner as in Example 4 was mixed with 2.37N hydrochloric acid, which was 4 times by mass, and left to stir at 55 ° C. for 18 hours for filtration and washing. Then, this was stirred and mixed with a 20% aqueous ammonium chloride solution in the same manner as in Example 1, and dried in the air at 110 ° C. overnight. Thus, SiO 2 / Al 2 O 3 is 58.0, cation type was obtained YFI type zeolite is a type 4 NH.
- Example 8 The calcined product obtained in the same manner as in Example 4 was mixed with 4% by mass of 3.39N hydrochloric acid, left to stir at 55 ° C. for 18 hours, and filtered and washed. Then, this was stirred and mixed with a 20% aqueous ammonium chloride solution in the same manner as in Example 1, and dried in the air at 110 ° C. overnight. Thus, SiO 2 / Al 2 O 3 is 91.0, cation type was obtained YFI type zeolite is a type 4 NH.
- Example 2 Cs impregnation treatment was carried out in the same manner as in Example 1 to obtain a YFI-type zeolite having SiO 2 / Al 2 O 3 of 91.0 and a cation type of Cs type, which was used as the composition of this example. And said.
- Example 9 Except that the YFI-type zeolite obtained by the same method as in Example 4 was used, and the liquid amount of 0.75 equal amount of alkali metal (Cs) (mol) was used for impregnation of the alkali metal. Obtained a YFI-type zeolite having SiO 2 / Al 2 O 3 of 19.1 and a cation type of Cs type by the same method as in Example 1, and this was used as the composition of this example.
- Cs alkali metal
- Example 10 The YFI-type zeolite obtained by the same method as in Example 4 was used, and a liquid amount of 0.5 equal amount of alkali metal (Cs) (mol) was used for impregnation of the alkali metal.
- Cs alkali metal
- a YFI-type zeolite having a SiO 2 / Al 2 O 3 of 19.1 and a cation type of Cs type was obtained, which was used in this example. It was made into a composition.
- Example 11 The YFI-type zeolite obtained by the same method as in Example 4 was used, and a liquid amount of 0.25 equal amounts of alkali metal (Cs) (mol) was used for impregnation of the alkali metal.
- Cs alkali metal
- a YFI-type zeolite having a SiO 2 / Al 2 O 3 of 19.1 and a cation type of Cs type was obtained, which was used in this example. It was made into a composition.
- Example 12 The YFI-type zeolite obtained by the same method as in Example 4 was used, and 10% by mass of lithium chloride (manufactured by Kanto Chemical Co., Ltd.) aqueous solution was used instead of cesium chloride, and 50 equal amounts of alkali metal (Li) (mol). ) was used for impregnation of the alkali metal, but by performing the Li impregnation treatment in the same manner as in Example 1, SiO 2 / Al 2 O 3 was 19.1 and the cation type was Li. A YFI-type zeolite as a mold was obtained, and this was used as the composition of this example.
- Example 13 Using the YFI-type zeolite obtained by the same method as in Example 4, and instead of cesium chloride, 10 wt% sodium chloride (manufactured by Fuji Film Wako Pure Chemical Industries, Ltd.) aqueous solution, 50 equal amounts of alkali metal (Na). By performing the Na impregnation treatment in the same manner as in Example 1 except that the amount of liquid (molar) was used for impregnation of the alkali metal, SiO 2 / Al 2 O 3 was 19.1, and the cation type. was obtained as a Na-type YFI-type zeolite, which was used as the composition of this example.
- Example 14 The YFI-type zeolite obtained by the same method as in Example 4 was used, and instead of cesium chloride, a 2% by mass potassium chloride (manufactured by Kanto Chemical Co., Ltd.) aqueous solution was used, and an equal amount of alkali metal (K) (mol) was used. ) was used for impregnation of the alkali metal, but by performing the K impregnation treatment in the same manner as in Example 1, SiO 2 / Al 2 O 3 was 19.1 and the cation type was K. A YFI-type zeolite as a mold was obtained, and this was used as the composition of this example.
- cesium chloride a 2% by mass potassium chloride (manufactured by Kanto Chemical Co., Ltd.) aqueous solution was used, and an equal amount of alkali metal (K) (mol) was used.
- K alkali metal
- Example 15 The YFI-type zeolite obtained by the same method as in Example 4 was used, and a 2% by mass% rubidium chloride (manufactured by Kanto Chemical Co., Ltd.) aqueous solution was used instead of cesium chloride, and an equal amount of alkali metal (Rb) amount (mol). ) was used for impregnation of the alkali metal, but by performing the Rb impregnation treatment in the same manner as in Example 1, SiO 2 / Al 2 O 3 was 19.1 and the cation type was Rb. A YFI-type zeolite as a mold was obtained, and this was used as the composition of this example.
- Comparative Example 1 In Example 1, a SiO 2 / Al 2 O 3 is 18, MFI-type zeolite in place of YFI type zeolite cation type is type 4 NH (product name: HSZ-840NHA, manufactured by Tosoh Corporation) was used ( That is, the MFI-type zeolite was used as the composition of this comparative example without being impregnated with cesium).
- the alkali metal content of the composition of this comparative example is 0% by mass.
- Comparative Example 2 The composition of this comparative example was prepared in the same manner as in Example 4 except that the Cs impregnation treatment was not performed.
- Example 3 In Example 1, a SiO 2 / Al 2 O 3 is 18, MFI-type zeolite in place of YFI type zeolite cation type is type 4 NH (product name: HSZ-840NHA, manufactured by Tosoh Corporation) was used, the A Cs-containing MFI-type zeolite was obtained in the same manner as in Example 1 except that the MFI-type zeolite was treated with cesium, and this was used as the composition of this comparative example.
- HSZ-840NHA product name: HSZ-840NHA, manufactured by Tosoh Corporation
- Measurement example 1 (Preparation and pretreatment of measurement sample)
- the compositions obtained in Examples and Comparative Examples were used as hydrocarbon adsorbents, respectively.
- the hydrocarbon adsorbents according to Examples and Comparative Examples were pressure-molded and pulverized to obtain an amorphous molded body having an agglomeration diameter of 20 to 30 mesh, and the obtained molded body was used according to each Example or Comparative Example. It was used as a measurement sample.
- Each 1 g of each measurement sample was filled in a normal pressure fixed bed flow type reaction tube, treated with nitrogen flow at 500 ° C. for 1 hour, and then cooled to 50 ° C. for pretreatment.
- Hydrocarbon adsorption A hydrocarbon-containing gas was circulated through each hydrocarbon adsorbent after the pretreatment, and the hydrocarbon adsorbed between 50 ° C. and 200 ° C. was measured and used as the amount of hydrocarbon adsorbed.
- the composition and measurement conditions of the hydrocarbon-containing gas are shown below.
- Hydrocarbon-containing gas Toluene 3000 volume ppmC (methane equivalent concentration) Water 3% by volume Nitrogen residual gas flow rate: 200 mL / min Measurement temperature: 50-600 ° C Temperature rise rate: 10 ° C / min (measurement of hydrocarbon desorption start temperature and desorption temperature range) Using a hydrogen ionization detector (FID), hydrocarbons in the gas after passing through the hydrocarbon adsorbent were continuously quantitatively analyzed.
- the hydrocarbon concentration of the hydrogen-containing gas (methane-equivalent concentration; hereinafter referred to as "outlet concentration”) was measured.
- the integrated value of the inlet concentration is used as the amount of hydrocarbon that has passed through the hydrocarbon adsorbent, and the value obtained by subtracting the integrated value of the outlet concentration (methane equivalent concentration) from the amount of hydrocarbon is obtained, and the amount of hydrocarbon adsorbed in each adsorbent is calculated. It was determined as the amount of hydrocarbon desorbed per mass of the hydrocarbon adsorbent ( ⁇ mol C / g).
- the relationship between the temperature of the measurement sample and the amount of carbon hydrogen desorption is such that as the temperature of the measurement sample rises, the amount of hydrocarbon desorption initially rises to the maximum value (hereinafter, also referred to as "maximum desorption amount"). It becomes a relationship drawn by an upward convex curve that decreases after becoming. Then, the more slowly the hydrocarbon is desorbed, the less the load on the ternary catalyst in the subsequent stage can be reduced. Therefore, the temperature at which the amount of desorbed hydrogen oxide decreases to 0 ⁇ mol C / g as the temperature of the measurement sample rises (maximum).
- the difference between the desorption start temperature and the temperature at which the hydrogen oxide desorption amount becomes 0 ⁇ mol C / g (hereinafter, also referred to as “desorption end temperature”) after the desorption amount is reached (hereinafter, “desorption”).
- desorption the temperature at which the hydrogen oxide desorption amount becomes 0 ⁇ mol C / g
- desorption end temperature the temperature at which the hydrogen oxide desorption amount becomes 0 ⁇ mol C / g
- desorption end temperature the temperature at which the hydrogen oxide desorption amount becomes 0 ⁇ mol C / g
- desorption end temperature the temperature at which the hydrogen oxide desorption amount becomes 0 ⁇ mol C / g
- desorption end temperature the temperature at which the hydrogen oxide desorption amount becomes 0 ⁇ mol C / g
- desorption end temperature the temperature at which the hydrogen oxide desorption amount becomes 0 ⁇ mol C / g
- desorption end temperature the temperature at which the hydrogen oxide desorption amount becomes 0 ⁇ mol C / g
- the hydrocarbon adsorbent of Example shows a wider desorption temperature range than the hydrocarbon adsorbent of Comparative Example 1, and the one having a YFI structure slowly desorbs hydrocarbons. You can see that it does. Further, from the comparison between Example and Comparative Example 2, the composition composed of YFI-type zeolite and the YFI-type zeolite containing any alkali metal of lithium, sodium, potassium, cesium and rubidium are alkaline. It can be seen that the desorption temperature range becomes wider due to the inclusion of metal.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Toxicology (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Treating Waste Gases (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Catalysts (AREA)
Abstract
Description
[1] アルカリ金属と、YFI構造を含有するゼオライトと、を含有する組成物であって、前記アルカリ金属の含有量が、前記組成物100質量%に対して、1~40質量%であり、前記YFI構造を有するゼオライトの含有量が、前記組成物100質量%に対して、99~60質量%であることを特徴とする組成物。
[2] 前記アルカリ金属がリチウム、ナトリウム、カリウム、ルビジウム及びセシウムの群から選ばれる少なくとも1種である上記[1]に記載の組成物。
[3] 前記アルカリ金属がルビジウムおよび/またはセシウムである上記[1]又は[2]に記載の組成物。
[4] 前記アルカリ金属がセシウムである上記[1]乃至[3]のいずれかに記載の組成物。
[5] 前記YFI構造を有するゼオライトが、アルミナに対するシリカのモル比(SiO2/Al2O3)が5以上400以下のYFI構造を有するゼオライトである上記[1]乃至[4]のいずれかに記載の組成物。
[6] 前記YFI構造を有するゼオライトが、アルミナに対するシリカのモル比(SiO2/Al2O3)が5以上100以下のYFI構造を有するゼオライトである上記[1]乃至[5]のいずれかに記載の組成物。
[7] 上記[1]乃至[6]のいずれかに記載の組成物を含む炭化水素吸着剤。
[8] 上記[7]に記載の炭化水素吸着剤を使用する炭化水素の吸着方法。
線源 : CuKα線(λ=1.5405Å)
測定モード : 連続スキャン
スキャン条件 : 40°/分
測定範囲 : 2θ=3°から43°
発散縦制限スリット : 10mm
発散/入射スリット : 1°
受光スリット : open
受光ソーラースリット : 5°
検出器 : 半導体検出器(D/teX Ultra)
Niフィルター使用
本開示の組成物に含まれるゼオライトは、ゼオライト構造としてYFI構造を有する。本開示においては、特定のゼオライト構造を有するゼオライトを「~型ゼオライト」ともいい、例えばYFI構造を有するゼオライト、好ましくはYFI構造のみを有するゼオライト、をYFI型ゼオライトともいう。
Me2Pr2N+/SiO2モル比=0.05以上0.30以下
Na/SiO2モル比 =0.05以上0.30以下
K/SiO2モル比 =0.05以上0.30以下
H2O/SiO2モル比 =3以上50以下
好ましくは、結晶化工程では水熱処理により原料組成物を結晶化する。水熱処理の条件は特に限定されるものではないが、例えば、以下の条件を挙げることができる。
結晶化時間 : 1日~10日
結晶化圧力 : 自生圧
以上の結晶化工程によって原料組成物が結晶化し、YFI型ゼオライトが得られる。当該結晶化工程後、得られたYFI型ゼオライトについては、任意の方法で回収、洗浄、乾燥、及び焼成の各工程に供してもよく、更には、脱アルミニウム処理してSiO2/Al2O3比を任意の値としてもよい。
一般的なX線回折装置(装置名:UltimaIV Protectus、リガク社製)を使用し、以下の条件で試料のXRD測定をした。
線源 : CuKα線(λ=1.5405Å)
測定モード : 連続スキャン(2θ/θスキャン)
スキャン条件 : 40°/分
測定範囲 : 2θ=3°から43°
発散縦制限スリット : 10mm
発散/入射スリット : 1°
受光スリット : open
受光ソーラースリット : 5°
検出器 : 半導体検出器(D/teX Ultra)
Niフィルター使用
得られたXRDパターンと参照パターンとを比較し、結晶構造の同定を行った。
フッ酸と硝酸の混合水溶液に試料を溶解して試料溶液を調製した。一般的なICP装置(装置名:OPTIMA5300DV、PerkinElmer社製)を使用して、当該試料溶液を誘導結合プラズマ発光分光分析(ICP-AES)で測定した。得られたSi、Al及びアルカリ金属(Cs及びNa等)の測定値から、試料のSiO2/Al2O3モル比、及びアルカリ金属の質量%を求めた。
(YFI構造を有するゼオライトの合成)
コロイダルシリカAS-40(GRACE製)、Y型ゼオライト(製品名:HSZ-350HOA、東ソー社製)、Me2Pr2NOH、NaOH、KOH及びH2Oを混合し、以下のモル組成を有する原料組成物を得た。
SiO2/Al2O3モル比 =40
Me2Pr2N+/SiO2モル比=0.17
Na/SiO2モル比 =0.15
K/SiO2モル比 =0.17
H2O/SiO2モル比 =7
得られた原料組成物をオートクレーブに充填し、160℃、6日間静置下で結晶化した。結晶化後、大気中、550℃で2時間焼成した焼成物と、該焼成物のAl量に対して大過剰である30モル当量のNH4量となる液量の20%塩化アンモニウム水溶液とを混合し、混合水溶液を80℃、24時間撹拌した後ろ過する操作を2回繰り返すことで撹拌混合処理した後、大気中110℃で一晩乾燥した。これにより、SiO2/Al2O3が18であり、カチオンタイプがNH4型であるYFI型ゼオライトを得た。得られたYFI型ゼオライトのNa及びKの濃度は検出限界以下であった。
塩化セシウム(富士フィルム和光純薬製(特級))を用い、2質量%の塩化セシウム水溶液を調製した。塩化セシウム水溶液は、上記で得られたNH4型のYFI型ゼオライトのAl量(モル)に対し、4等量のアルカリ金属(Cs)量(モル)となる液量を、アルカリ金属の含有(含浸)のために、用いた。
実施例1に記載の大気中550℃で焼成した結晶化物(焼成物)について、30質量倍の0.5規定塩酸と混合し、室温で1時間撹拌放置し、ろ過洗浄した。次いで、これを実施例1と同様に20%塩化アンモニウム水溶液で撹拌混合処理し、大気中110℃で一晩乾燥した。これにより、SiO2/Al2O3が32であり、カチオンタイプがNH4型であるYFI型ゼオライトを得た。
原料組成物の組成を以下のモル組成となるようにしたこと以外は、実施例1と同様な方法で以下の原料組成物を得た。
Me2Pr2N+/SiO2モル比 =0.13
Na/SiO2モル比 =0.158
K/SiO2モル比 =0.165
H2O/SiO2モル比 =7
得られた原料組成物をオートクレーブに充填し、160℃、42時間静置下で結晶化した。これを大気中550℃で焼成した焼成物を、20%塩化アンモニウム水溶液撹拌混合処理し、その後大気中110℃で一晩乾燥した。これにより、SiO2/Al2O3が18.0であり、カチオンタイプがNH4型であるYFI型ゼオライトを得た。
原料組成物の組成を以下のモル組成となるように、実施例1と同様な方法で以下の原料組成物を得た。
SiO2/Al2O3モル比 =37.2
Me2Pr2N+/SiO2モル比 =0.17
Na/SiO2モル比 =0.15
K/SiO2モル比 =0.16
H2O/SiO2モル比 =7.25
得られた原料組成物をオートクレーブに充填し、160℃、36時間、250rpmの回転条件下で結晶化した。これを大気中550℃で焼成して得られた焼成物を、20%塩化アンモニウム水溶液で撹拌混合処理し、その後大気中110℃で一晩乾燥した。これにより、SiO2/Al2O3が19.1であり、カチオンタイプがNH4型であるYFI型ゼオライトを得た。
実施例4と同様な方法で得られた焼成物を、5.7質量倍の0.34規定塩酸と混合し、室温で1時間撹拌し、ろ過洗浄した。次いで、これを実施例1と同様に20%塩化アンモニウム水溶液で撹拌混合処理し、大気中110℃で一晩乾燥した。これにより、SiO2/Al2O3が24.4であり、カチオンタイプがNH4型であるYFI型ゼオライトを得た。
実施例4と同様な方法で得られた焼成物を、5.7質量倍の1.02規定塩酸と混合し、室温で18時間撹拌放置し、ろ過洗浄した。次いで、これを実施例1と同様に20%塩化アンモニウム水溶液で撹拌混合処理し、大気中110℃で一晩乾燥した。これにより、SiO2/Al2O3が41.3であり、カチオンタイプがNH4型であるYFI型ゼオライトを得た。
実施例4と同様な方法で得られた焼成物を、4質量倍の2.37規定塩酸と混合し、55℃で18時間撹拌放置し、ろ過洗浄した。次いで、これを実施例1と同様に20%塩化アンモニウム水溶液で撹拌混合処理し、大気中110℃で一晩乾燥した。これにより、SiO2/Al2O3が58.0であり、カチオンタイプがNH4型であるYFI型ゼオライトを得た。
実施例4と同様な方法で得られた焼成物を、4質量倍の3.39規定塩酸と混合し、55℃で18時間撹拌放置し、ろ過洗浄した。次いで、これを実施例1と同様に20%塩化アンモニウム水溶液で撹拌混合処理し、大気中110℃で一晩乾燥した。これにより、SiO2/Al2O3が91.0であり、カチオンタイプがNH4型であるYFI型ゼオライトを得た。
実施例4と同様な方法で得られたYFI型ゼオライトを用いたこと、及び、0.75等量のアルカリ金属(Cs)量(モル)となる液量をアルカリ金属の含浸に用いたこと以外は実施例1と同様な方法で、SiO2/Al2O3が19.1であり、カチオンタイプがCs型であるYFI型ゼオライトを得、これを本実施例の組成物とした。
実施例4と同様な方法で得られたYFI型ゼオライトを用いたこと、及び、0.5等量のアルカリ金属(Cs)量(モル)となる液量をアルカリ金属の含浸のために用いたこと以外は実施例1と同様にCs含浸処理を行うことで、SiO2/Al2O3が19.1であり、カチオンタイプがCs型であるYFI型ゼオライトを得、これを本実施例の組成物とした。
実施例4と同様な方法で得られたYFI型ゼオライトを用いたこと、及び、0.25等量のアルカリ金属(Cs)量(モル)となる液量をアルカリ金属の含浸のために用いたこと以外は実施例1と同様にCs含浸処理を行うことで、SiO2/Al2O3が19.1であり、カチオンタイプがCs型であるYFI型ゼオライトを得、これを本実施例の組成物とした。
実施例4と同様な方法で得られたYFI型ゼオライトを用いたこと、及び、塩化セシウムに代わり10質量%の塩化リチウム(関東化学製)水溶液、50等量のアルカリ金属(Li)量(モル)となる液量をアルカリ金属の含浸のために用いたこと以外は実施例1と同様にLi含浸処理を行うことで、SiO2/Al2O3が19.1であり、カチオンタイプがLi型であるYFI型ゼオライトを得、これを本実施例の組成物とした。
実施例4と同様な方法で得られたYFI型ゼオライトを用いたこと、及び、塩化セシウムに代わり10wt%の塩化ナトリウム(富士フィルム和光純薬製)水溶液、50等量のアルカリ金属(Na)量(モル)となる液量をアルカリ金属の含浸のために用いたこと以外は実施例1と同様にNa含浸処理を行うことで、SiO2/Al2O3が19.1であり、カチオンタイプがNa型であるYFI型ゼオライトを得、これを本実施例の組成物とした。
実施例4と同様な方法で得られたYFI型ゼオライトを用いたこと、及び、塩化セシウムに代わり2質量%の塩化カリウム(関東化学製)水溶液、10等量のアルカリ金属(K)量(モル)となる液量をアルカリ金属の含浸のために用いたこと以外は実施例1と同様にK含浸処理を行うことで、SiO2/Al2O3が19.1であり、カチオンタイプがK型であるYFI型ゼオライトを得、これを本実施例の組成物とした。
実施例4と同様な方法で得られたYFI型ゼオライトを用いたこと、及び、塩化セシウムに代わり2質量%の塩化ルビジウム(関東化学製)水溶液、2等量のアルカリ金属(Rb)量(モル)となる液量をアルカリ金属の含浸のために用いたこと以外は実施例1と同様にRb含浸処理を行うことで、SiO2/Al2O3が19.1であり、カチオンタイプがRb型であるYFI型ゼオライトを得、これを本実施例の組成物とした。
実施例1において、SiO2/Al2O3が18であり、カチオンタイプがNH4型であるYFI型ゼオライトの代わりにMFI型ゼオライト(製品名:HSZ-840NHA、東ソー社製)を用いた(すなわち、セシウムの含浸処理を行わずにMFI型ゼオライトを本比較例の組成物とした)。本比較例の組成物のアルカリ金属含有量は0質量%である。
Csの含浸処理を行わなかったこと以外は実施例4と同様な方法で、本比較例の組成物とした。
実施例1において、SiO2/Al2O3が18であり、カチオンタイプがNH4型であるYFI型ゼオライトの代わりにMFI型ゼオライト(製品名:HSZ-840NHA、東ソー社製)を用い、当該MFI型ゼオライトにセシウムの含入処理を実施したこと以外は実施例1と同様な方法でCs含有MFI型ゼオライトを得、これを本比較例の組成物とした。
(測定試料の作製及び前処理)
実施例及び比較例で得られた組成物をそれぞれ炭化水素吸着剤として用いた。実施例及び比較例に係る炭化水素吸着剤を、各々加圧成形及び粉砕し、凝集径20~30メッシュの不定形の成形体とし、得られた成形体をそれぞれの実施例又は比較例に係る測定試料とした。各測定試料1gをそれぞれ、常圧固定床流通式反応管に充填し、窒素流通下、500℃で1時間処理した後、50℃まで降温することで前処理とした。
(炭化水素吸着)
前処理後の各炭化水素吸着剤に炭化水素含有ガスを流通させ、50℃から200℃の間で吸着した炭化水素を測定し炭化水素の吸着量とした。炭化水素含有ガスの組成及び測定条件を以下に示す。
水 3体積%
窒素 残部
ガス流量 :200mL/分
測定温度 :50~600℃
昇温速度 :10℃/分
(炭化水素の脱離開始温度及び脱離温度幅の測定)
水素イオン化検出器(FID)を使用し、炭化水素吸着剤を通過した後のガス中の炭化水素を連続的に定量分析した。常圧固定床流通式反応管の入口側の炭化水素含有ガスの炭化水素濃度(メタン換算濃度;以下、「入口濃度」とする。)と、常圧固定床流通式反応管の出口側の炭化水素含有ガスの炭化水素濃度(メタン換算濃度;以下、「出口濃度」とする。)を測定した。
Claims (8)
- アルカリ金属と、YFI構造を含有するゼオライトと、を含有する組成物であって、前記アルカリ金属の含有量が、前記組成物100質量%に対して、1~40質量%であり、前記YFI構造を有するゼオライトの含有量が、前記組成物100質量%に対して、99~60質量%であることを特徴とする組成物。
- 前記アルカリ金属がリチウム、ナトリウム、カリウム、ルビジウム及びセシウムの群から選ばれる少なくとも1種である請求項1に記載の組成物。
- 前記アルカリ金属がルビジウムおよび/またはセシウムである請求項1又は2に記載の組成物。
- 前記アルカリ金属がセシウムである請求項1乃至3のいずれかに記載の組成物。
- 前記YFI構造を有するゼオライトが、アルミナに対するシリカのモル比(SiO2/Al2O3)が5以上400以下のYFI構造を有するゼオライトである請求項1乃至4のいずれかに記載の組成物。
- 前記YFI構造を有するゼオライトが、アルミナに対するシリカのモル比(SiO2/Al2O3)が5以上100以下のYFI構造を有するゼオライトである請求項1乃至5のいずれかに記載の組成物。
- 請求項1乃至6のいずれかに記載の組成物を含む炭化水素吸着剤。
- 請求項7に記載の炭化水素吸着剤を使用する炭化水素の吸着方法。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202180026300.5A CN115413247A (zh) | 2020-03-31 | 2021-03-30 | 具有yfi结构的沸石组合物、烃吸附剂和烃的吸附方法 |
| US17/915,360 US12357963B2 (en) | 2020-03-31 | 2021-03-30 | YFI-structure zeolite composition, hydrocarbon adsorbent, and method for adsorbing hydrocarbons |
| EP21779275.3A EP4129464A4 (en) | 2020-03-31 | 2021-03-30 | ZEOLITE COMPOSITION HAVING YFI STRUCTURE, HYDROCARBON ADSORBENT AND HYDROCARBON ADSORPTION METHOD |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020-064910 | 2020-03-31 | ||
| JP2020064910 | 2020-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021200990A1 true WO2021200990A1 (ja) | 2021-10-07 |
Family
ID=77928516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2021/013610 Ceased WO2021200990A1 (ja) | 2020-03-31 | 2021-03-30 | Yfi構造を有するゼオライト組成物、炭化水素吸着剤及び炭化水素の吸着方法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12357963B2 (ja) |
| EP (1) | EP4129464A4 (ja) |
| JP (1) | JP7739742B2 (ja) |
| CN (1) | CN115413247A (ja) |
| WO (1) | WO2021200990A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4474350A4 (en) * | 2022-02-02 | 2026-01-21 | Tosoh Corp | NEW YFI TYPE ZEOLITE |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022185584A (ja) * | 2021-06-02 | 2022-12-14 | 東ソー株式会社 | Yfi型ゼオライト、その製造方法、炭化水素吸着剤及び炭化水素の吸着方法 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07185326A (ja) | 1993-12-27 | 1995-07-25 | Idemitsu Kosan Co Ltd | 排ガス中の炭化水素類浄化用吸着材 |
| JP2013111535A (ja) * | 2011-11-29 | 2013-06-10 | Nippon Soken Inc | 炭化水素吸着剤及び炭化水素吸着体 |
| JP2018089571A (ja) * | 2016-12-02 | 2018-06-14 | 東ソー株式会社 | Szr型ゼオライトを含む炭化水素吸着剤及び炭化水素の吸着方法 |
| JP2019018166A (ja) * | 2017-07-19 | 2019-02-07 | 東ソー株式会社 | 触媒及び触媒を用いた窒素酸化物還元の方法 |
| JP2019093382A (ja) * | 2017-11-20 | 2019-06-20 | 東ソー株式会社 | 炭化水素吸着剤及び炭化水素の吸着方法 |
| JP2020064910A (ja) | 2018-10-15 | 2020-04-23 | トヨタ自動車株式会社 | スイッチング素子 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1330956A (en) | 1971-04-20 | 1973-09-19 | Bp Chem Int Ltd | Hydrocarbon separation process |
| JP3311822B2 (ja) * | 1993-06-14 | 2002-08-05 | 日本ケミテック株式会社 | 中空導光板本体及びそれを用いた中空導光板 |
| JP2001293368A (ja) | 2000-04-13 | 2001-10-23 | Tosoh Corp | 炭化水素吸着剤及び炭化水素の吸着除去方法 |
| US6617276B1 (en) * | 2000-07-21 | 2003-09-09 | Johnson Matthey Public Limited Company | Hydrocarbon trap/catalyst for reducing cold-start emissions from internal combustion engines |
| KR102035867B1 (ko) * | 2012-11-23 | 2019-10-24 | 서강대학교산학협력단 | 기공 내 요오드 또는 브롬이 포집된 요오드 또는 브롬 함유 제올라이트 복합체 및 이의 용도 |
| EP3381865A4 (en) * | 2015-11-27 | 2018-10-03 | Mitsubishi Chemical Corporation | Method for producing eight-membered oxygen ring zeolite and aei-type zeolite |
| CN107511163B (zh) * | 2016-06-18 | 2020-11-03 | 中国石油化工股份有限公司 | 分子筛催化剂、制备方法及应用 |
| EP3597293B1 (en) * | 2017-03-13 | 2023-07-26 | Mitsubishi Chemical Corporation | Transition metal-carrying zeolite and production method therefor, and nitrogen oxide purification catalyst and method for using same |
-
2021
- 2021-03-30 WO PCT/JP2021/013610 patent/WO2021200990A1/ja not_active Ceased
- 2021-03-30 JP JP2021058262A patent/JP7739742B2/ja active Active
- 2021-03-30 US US17/915,360 patent/US12357963B2/en active Active
- 2021-03-30 EP EP21779275.3A patent/EP4129464A4/en active Pending
- 2021-03-30 CN CN202180026300.5A patent/CN115413247A/zh active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07185326A (ja) | 1993-12-27 | 1995-07-25 | Idemitsu Kosan Co Ltd | 排ガス中の炭化水素類浄化用吸着材 |
| JP2013111535A (ja) * | 2011-11-29 | 2013-06-10 | Nippon Soken Inc | 炭化水素吸着剤及び炭化水素吸着体 |
| JP2018089571A (ja) * | 2016-12-02 | 2018-06-14 | 東ソー株式会社 | Szr型ゼオライトを含む炭化水素吸着剤及び炭化水素の吸着方法 |
| JP2019018166A (ja) * | 2017-07-19 | 2019-02-07 | 東ソー株式会社 | 触媒及び触媒を用いた窒素酸化物還元の方法 |
| JP2019093382A (ja) * | 2017-11-20 | 2019-06-20 | 東ソー株式会社 | 炭化水素吸着剤及び炭化水素の吸着方法 |
| JP2020064910A (ja) | 2018-10-15 | 2020-04-23 | トヨタ自動車株式会社 | スイッチング素子 |
Non-Patent Citations (2)
| Title |
|---|
| "Collection of Simulated XRD Powder Patterns for Zeolites", 2007 |
| See also references of EP4129464A4 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4474350A4 (en) * | 2022-02-02 | 2026-01-21 | Tosoh Corp | NEW YFI TYPE ZEOLITE |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021161022A (ja) | 2021-10-11 |
| JP7739742B2 (ja) | 2025-09-17 |
| EP4129464A4 (en) | 2024-07-10 |
| US12357963B2 (en) | 2025-07-15 |
| EP4129464A1 (en) | 2023-02-08 |
| CN115413247A (zh) | 2022-11-29 |
| US20230234023A1 (en) | 2023-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2015020014A1 (ja) | ゼオライト及びその製造方法と用途 | |
| CN108290144A (zh) | 沸石催化剂及低级烯烃的制造方法 | |
| JP7318193B2 (ja) | 炭化水素吸着剤及び炭化水素の吸着方法 | |
| JP7739742B2 (ja) | Yfi構造を有するゼオライト組成物、炭化水素吸着剤及び炭化水素の吸着方法 | |
| JP6817022B2 (ja) | 高耐水熱性チャバザイト型ゼオライトおよびその製造方法 | |
| JP7803044B2 (ja) | 炭化水素吸着剤及び炭化水素の吸着方法 | |
| JP6926459B2 (ja) | Szr型ゼオライトを含む炭化水素吸着剤及び炭化水素の吸着方法 | |
| US20240382928A1 (en) | Yfi-type zeolite, method for producing the same, hydrocarbon adsorbent and hydrocarbon adsorption method | |
| JP2018079428A (ja) | 炭化水素吸着剤及び炭化水素の吸着除去方法 | |
| JP2021178746A (ja) | ゼオライトの製造方法、ゼオライト、触媒、及び吸着剤 | |
| JP7104298B2 (ja) | 新規ゼオライト及びこれを含む炭化水素吸着剤 | |
| JP7739715B2 (ja) | 炭化水素吸着剤及び炭化水素の吸着方法 | |
| JP7711450B2 (ja) | 炭化水素吸着剤及び炭化水素の吸着方法 | |
| JP7753772B2 (ja) | ゼオライトzts-8及びその製造方法 | |
| WO2017213022A1 (ja) | 高耐水熱性チャバザイト型ゼオライトおよびその製造方法 | |
| JP7753795B2 (ja) | Cha型ゼオライト及びその製造方法 | |
| JP7725860B2 (ja) | 炭化水素吸着剤、炭化水素吸着剤の製造方法及び炭化水素の吸着方法 | |
| JP7691037B1 (ja) | 鉄含有小細孔ゼオライト | |
| JP7677496B2 (ja) | 鉄含有fer型ゼオライト及びその製造方法 | |
| JP2024011057A (ja) | 銅含有fau型ゼオライト | |
| JP2022102263A (ja) | 炭化水素吸着剤及び炭化水素の吸着方法 | |
| JP2022098472A (ja) | Cha型ゼオライト及びその製造方法 | |
| JP2022040056A (ja) | Cha型ゼオライト及びその製造方法 | |
| JPWO2001019731A1 (ja) | 新規化合物及びミクロ多孔体及びその製造方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21779275 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202217058107 Country of ref document: IN |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2021779275 Country of ref document: EP Effective date: 20221031 |
|
| WWG | Wipo information: grant in national office |
Ref document number: 17915360 Country of ref document: US |