GB1459632A - Converter for the purification of exhaust gases - Google Patents

Converter for the purification of exhaust gases

Info

Publication number
GB1459632A
GB1459632A GB1481174A GB1481174A GB1459632A GB 1459632 A GB1459632 A GB 1459632A GB 1481174 A GB1481174 A GB 1481174A GB 1481174 A GB1481174 A GB 1481174A GB 1459632 A GB1459632 A GB 1459632A
Authority
GB
United Kingdom
Prior art keywords
oxide
copper
platinum
exhaust gases
layer
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
GB1481174A
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.)
Toyota Central R&D Labs Inc
Original Assignee
Toyota Central R&D Labs Inc
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 Toyota Central R&D Labs Inc filed Critical Toyota Central R&D Labs Inc
Publication of GB1459632A publication Critical patent/GB1459632A/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
    • B01D53/9431—Processes characterised by a specific device
    • 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
    • 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
    • B01D2255/102—Platinum group metals
    • B01D2255/1023—Palladium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/204—Alkaline earth metals
    • B01D2255/2042—Barium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/206—Rare earth metals
    • B01D2255/2061—Yttrium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/206—Rare earth metals
    • B01D2255/2063—Lanthanum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/206—Rare earth metals
    • B01D2255/2065—Cerium
    • 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
    • B01D2255/2073—Manganese
    • 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
    • B01D2255/20761—Copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/902—Multilayered catalyst
    • B01D2255/9022—Two layers

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)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)

Abstract

1459632 Treating exhaust gases TOYOTA CHUG KENKYUSHO KK 3 April 1974 [3 April 1973] 14811/74 Heading C1A [Also in Division B1] Nitrogen oxides in exhaust gases from I.C. engines are reduced by successive contact in a catalytic converter with (i) a first catalyst layer having a sintered body structure and consisting of a particulate mixture of (a) nickel oxide and copper oxide; (b) manganese oxide and one or more of cerium oxide, lanthanum oxide, iron oxide, niobium oxide or nickel oxide; or (c) cobalt oxide and niobium oxide and/or yttrium oxide, and (ii) a second layer comprising platinum, platinum-rhodium, platinum-palladium or nickel oxide-chromium oxide-copper oxide-iron oxide-barium oxide. A further catalyst layer comprising copper and/or copper oxide and, optionally, lanthanum and/or cerium oxide may be situated upstream of the first layer. The layers may be situated in a single internally divided vessel or in separate reactors connected by piping.
GB1481174A 1973-04-03 1974-04-03 Converter for the purification of exhaust gases Expired GB1459632A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3742773A JPS5341636B2 (en) 1973-04-03 1973-04-03

Publications (1)

Publication Number Publication Date
GB1459632A true GB1459632A (en) 1976-12-22

Family

ID=12497205

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1481174A Expired GB1459632A (en) 1973-04-03 1974-04-03 Converter for the purification of exhaust gases

Country Status (2)

Country Link
JP (1) JPS5341636B2 (en)
GB (1) GB1459632A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2643114A1 (en) * 1989-02-16 1990-08-17 Mohammed Boubehira CATALYTIC COMPOSITE EXHAUST POT
US5356598A (en) * 1989-02-16 1994-10-18 Mohamed Boubehira Catalytic exhaust unit for an automobile vehicle
EP2749351A1 (en) * 2012-12-26 2014-07-02 Lotte Chemical Corporation of (Sindaebang-dong) A catalyst for reductive amination-reaction and uses thereof
CN103920498A (en) * 2013-01-10 2014-07-16 乐天化学株式会社 Catalyst for reductive amination reaction, and application thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5820309B2 (en) * 1976-06-02 1983-04-22 大阪瓦斯株式会社 Catalyst composition for reduction and removal of NO↓x in exhaust gas
JPS6185135U (en) * 1985-11-08 1986-06-04

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2643114A1 (en) * 1989-02-16 1990-08-17 Mohammed Boubehira CATALYTIC COMPOSITE EXHAUST POT
EP0384853A2 (en) * 1989-02-16 1990-08-29 Mohammed Boubehira Catalyst for motor vehicle exhaust gases
EP0384853A3 (en) * 1989-02-16 1990-10-17 Mohammed Boubehira Catalytic reactor, specifically a catalyst for motor vehicle exhaust gases
US5356598A (en) * 1989-02-16 1994-10-18 Mohamed Boubehira Catalytic exhaust unit for an automobile vehicle
EP2749351A1 (en) * 2012-12-26 2014-07-02 Lotte Chemical Corporation of (Sindaebang-dong) A catalyst for reductive amination-reaction and uses thereof
US8895784B2 (en) 2012-12-26 2014-11-25 Lotte Chemical Corporation Catalyst for reductive amination-reaction and uses thereof
CN103920498A (en) * 2013-01-10 2014-07-16 乐天化学株式会社 Catalyst for reductive amination reaction, and application thereof
CN103920498B (en) * 2013-01-10 2016-04-20 乐天化学株式会社 For catalyst and the application thereof of reductive amination reaction

Also Published As

Publication number Publication date
JPS5341636B2 (en) 1978-11-06
JPS49123473A (en) 1974-11-26

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee