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GB1431376A - Catalytic process - Google Patents

Catalytic process

Info

Publication number
GB1431376A
GB1431376A GB1758072A GB1758072A GB1431376A GB 1431376 A GB1431376 A GB 1431376A GB 1758072 A GB1758072 A GB 1758072A GB 1758072 A GB1758072 A GB 1758072A GB 1431376 A GB1431376 A GB 1431376A
Authority
GB
United Kingdom
Prior art keywords
metal
volume
april
hydrocarbons
catalyst
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
Application number
GB1758072A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1758072A priority Critical patent/GB1431376A/en
Priority to IT2307773A priority patent/IT988626B/en
Priority to FR7313759A priority patent/FR2181346A5/fr
Priority to CH550673A priority patent/CH576582A5/xx
Priority to DE2319529A priority patent/DE2319529A1/en
Priority to ZA732623A priority patent/ZA732623B/en
Priority to JP48042770A priority patent/JPS4920068A/ja
Priority to AU59248/73A priority patent/AU5924873A/en
Publication of GB1431376A publication Critical patent/GB1431376A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9413—Processes characterised by a specific catalyst
    • B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1021—Platinum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/104—Silver
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/106—Gold
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20738—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20746—Cobalt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20753—Nickel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20761—Copper
    • 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
    • B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

1431376 Gas separation IMPERIAL CHEMICAL INDUSTRIES Ltd 9 April 1973 [17 April 1972 19 Oct 1972 20 Dec 1972] 17580/72 48202/72 and 58688/72 Heading C1A [Also in Division B1] I.C. engine exhaust gases are treated for reduction of nitrogen oxides and, if desired, oxidation of carbon monoxide and hydrocarbons using a catalyst comprising Ni and/or Co metal or a compound reducible thereto, a refractory oxidic support, a minor proportion, calculated as metal atoms with respect to the total of Ni and/or Co, of copper as metal or a compound reducible thereto and 0À001 to 1% w./w. of silver, gold or a platinum group metal but less than 5% w./w. of chromia. Nitrogen oxides are removed by passing the exhaust gases over the catalyst at net-reducing conditions, suitably at a reducing power of the exhaust gas, calculated in volume percentages as CO + H 2 -2O 2 of at least 0À1 and up to 8. The gases are suitably treated at at least 300‹ C., e.g. 500- 700‹ C. under steady running conditions at a volume/volume space velocity of 0À06-10<SP>5</SP> to 3À0 x 10<SP>5</SP> hour<SP>-1</SP>. The reductive treatment may be followed by addition of air and an oxidation stage to remove carbon monoxide and hydrocarbons. The examples describe the use of catalysts containing nickel, copper and platinum, palladium or rhodium. Specifications 1,431,375 and 1,431,377 are referred to
GB1758072A 1972-04-17 1972-04-17 Catalytic process Expired GB1431376A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB1758072A GB1431376A (en) 1972-04-17 1972-04-17 Catalytic process
IT2307773A IT988626B (en) 1972-04-17 1973-04-16 CATALYTIC PROCESS FOR THE TREATMENT OF EXHAUST GASES OF INTERNAL COMBUSTION ENGINES
FR7313759A FR2181346A5 (en) 1972-04-17 1973-04-16
CH550673A CH576582A5 (en) 1972-04-17 1973-04-17
DE2319529A DE2319529A1 (en) 1972-04-17 1973-04-17 METHOD OF TREATMENT OF EXHAUST GAS FROM COMBUSTION ENGINES
ZA732623A ZA732623B (en) 1972-04-17 1973-04-17 Catalytic process
JP48042770A JPS4920068A (en) 1972-04-17 1973-04-17
AU59248/73A AU5924873A (en) 1972-04-17 1973-08-15 Catalytic process in treating internal combustion engines

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB1758072A GB1431376A (en) 1972-04-17 1972-04-17 Catalytic process
GB4820272 1972-10-19
GB5868872 1972-12-20

Publications (1)

Publication Number Publication Date
GB1431376A true GB1431376A (en) 1976-04-07

Family

ID=27257521

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1758072A Expired GB1431376A (en) 1972-04-17 1972-04-17 Catalytic process

Country Status (5)

Country Link
JP (1) JPS4920068A (en)
CH (1) CH576582A5 (en)
DE (1) DE2319529A1 (en)
FR (1) FR2181346A5 (en)
GB (1) GB1431376A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57195651A (en) * 1981-05-27 1982-12-01 Maruyama Kogyo Synthetic resin laminate sheet and its manufacture
JPS58128128A (en) * 1982-01-27 1983-07-30 Toyota Motor Corp Filter for purifying exhaust gas of internal-combustion engine
US4521530A (en) * 1983-06-15 1985-06-04 Teledyne Industries, Inc., Teledyne Water Pik Catalyst of palladium, copper and nickel on a substrate

Also Published As

Publication number Publication date
JPS4920068A (en) 1974-02-22
FR2181346A5 (en) 1973-11-30
DE2319529A1 (en) 1973-10-31
CH576582A5 (en) 1976-06-15

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees