GB1480020A - Catalytic reduction of nitrogen oxides in waste gas - Google Patents
Catalytic reduction of nitrogen oxides in waste gasInfo
- Publication number
- GB1480020A GB1480020A GB3254575A GB3254575A GB1480020A GB 1480020 A GB1480020 A GB 1480020A GB 3254575 A GB3254575 A GB 3254575A GB 3254575 A GB3254575 A GB 3254575A GB 1480020 A GB1480020 A GB 1480020A
- Authority
- GB
- United Kingdom
- Prior art keywords
- salt
- waste gas
- nitrogen oxides
- catalytic reduction
- aug
- 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.)
- Expired
Links
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title 3
- 238000010531 catalytic reduction reaction Methods 0.000 title 1
- 239000002912 waste gas Substances 0.000 title 1
- 239000003054 catalyst Substances 0.000 abstract 4
- 150000003839 salts Chemical class 0.000 abstract 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 150000002739 metals Chemical class 0.000 abstract 2
- 230000007704 transition Effects 0.000 abstract 2
- 238000001354 calcination Methods 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000011964 heteropoly acid Substances 0.000 abstract 1
- 238000005470 impregnation Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- DHRLEVQXOMLTIM-UHFFFAOYSA-N phosphoric acid;trioxomolybdenum Chemical compound O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.OP(O)(O)=O DHRLEVQXOMLTIM-UHFFFAOYSA-N 0.000 abstract 1
- IYDGMDWEHDFVQI-UHFFFAOYSA-N phosphoric acid;trioxotungsten Chemical compound O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.OP(O)(O)=O IYDGMDWEHDFVQI-UHFFFAOYSA-N 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
- 229910052720 vanadium Inorganic materials 0.000 abstract 1
Classifications
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/85—Chromium, molybdenum or tungsten
-
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Biomedical Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
1480020 NO x -reduction catalyst JAPAN GASOLINE CO Ltd 4 Aug 1975 [6 Aug 1974] 32545/75 Heading B1E [Also in Division Cl] A NO x -reduction catalyst comprises a salt of a heteropolyacid with one or more metals of the first transition series supported on a carrier, the catalyst containing at least 0.5% wt of the salt. The salt may be a Cu, Ti, V, Cr, Mn, Fe, Co or Ni salt of silicotungstic, silicomolybdic, phosphotungstic or phosphomolybdic acid. The carrier may be alumina, silica, e.g. kieselguhr or silica-alumina and suitably has a specific surface of not less than 50 m<SP>2</SP>/g and a pore volume of 0.2-1.5 a/g. The catalyst may further contain one or more oxides of the metals of the first transition series. It may be formed by impregnation followed by calcination..
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49089470A JPS5118262A (en) | 1974-08-06 | 1974-08-06 | Haigasuchuno chitsusosankabutsuno jokyohoho |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1480020A true GB1480020A (en) | 1977-07-20 |
Family
ID=13971591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3254575A Expired GB1480020A (en) | 1974-08-06 | 1975-08-04 | Catalytic reduction of nitrogen oxides in waste gas |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5118262A (en) |
| DE (1) | DE2534270C2 (en) |
| FR (1) | FR2281165A1 (en) |
| GB (1) | GB1480020A (en) |
| NL (1) | NL171236C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2410787A1 (en) * | 1977-12-02 | 1979-06-29 | Mitsubishi Heavy Ind Ltd | PROCESS AND INSTALLATION FOR CONTROLLING THE NITROGEN OXIDE CONTENT IN BURNT GASES FROM COMBUSTION APPLIANCES |
| CN119500267A (en) * | 2024-11-21 | 2025-02-25 | 中国科学院大连化学物理研究所 | Heteropoly acid catalyst, preparation and application |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5187163A (en) * | 1975-01-29 | 1976-07-30 | Mitsubishi Kakoki Kk | |
| JPS6090043A (en) * | 1983-10-21 | 1985-05-21 | Nippon Shokubai Kagaku Kogyo Co Ltd | Catalyst for purifying nitrogen oxide |
| DE3941554A1 (en) * | 1989-12-16 | 1991-06-20 | Draegerwerk Ag | ELECTROCHEMICAL MEASURING CELL FOR DETECTING GAS COMPONENTS IN FLUID MEDIA |
| DE4038140A1 (en) * | 1990-11-30 | 1992-06-04 | Danfoss As | METHOD FOR PRODUCING A GAS SENSOR |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2608534A (en) * | 1949-04-18 | 1952-08-26 | Union Oil Co | Heteropoly acids or salts thereof as catalysts |
| US3230034A (en) * | 1960-09-29 | 1966-01-18 | Du Pont | Method of treating exhaust gases of internal combustion engines |
| GB1438120A (en) * | 1972-09-01 | 1976-06-03 | Exxon Research Engineering Co | Removal of nitrogen oxides from flue gas |
-
1974
- 1974-08-06 JP JP49089470A patent/JPS5118262A/en active Granted
-
1975
- 1975-07-31 DE DE19752534270 patent/DE2534270C2/en not_active Expired
- 1975-08-04 GB GB3254575A patent/GB1480020A/en not_active Expired
- 1975-08-05 FR FR7524386A patent/FR2281165A1/en active Granted
- 1975-08-06 NL NL7509356A patent/NL171236C/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2410787A1 (en) * | 1977-12-02 | 1979-06-29 | Mitsubishi Heavy Ind Ltd | PROCESS AND INSTALLATION FOR CONTROLLING THE NITROGEN OXIDE CONTENT IN BURNT GASES FROM COMBUSTION APPLIANCES |
| CN119500267A (en) * | 2024-11-21 | 2025-02-25 | 中国科学院大连化学物理研究所 | Heteropoly acid catalyst, preparation and application |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2281165B1 (en) | 1982-03-05 |
| FR2281165A1 (en) | 1976-03-05 |
| JPS5118262A (en) | 1976-02-13 |
| DE2534270A1 (en) | 1976-02-19 |
| NL7509356A (en) | 1976-02-10 |
| DE2534270C2 (en) | 1983-05-19 |
| NL171236C (en) | 1983-03-01 |
| JPS576966B2 (en) | 1982-02-08 |
| NL171236B (en) | 1982-10-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |