GB2000985A - Automotive emission control catalyst and method for making same - Google Patents

Automotive emission control catalyst and method for making same

Info

Publication number
GB2000985A
GB2000985A GB7828127A GB7828127A GB2000985A GB 2000985 A GB2000985 A GB 2000985A GB 7828127 A GB7828127 A GB 7828127A GB 7828127 A GB7828127 A GB 7828127A GB 2000985 A GB2000985 A GB 2000985A
Authority
GB
United Kingdom
Prior art keywords
layer
platinum
support
rhodium
palladium
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.)
Granted
Application number
GB7828127A
Other versions
GB2000985B (en
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
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
Priority claimed from US05/871,706 external-priority patent/US4128506A/en
Application filed by Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of GB2000985A publication Critical patent/GB2000985A/en
Application granted granted Critical
Publication of GB2000985B publication Critical patent/GB2000985B/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
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] 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
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/46—Ruthenium, rhodium, osmium or iridium
    • B01J23/464—Rhodium
    • 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/024—Multiple impregnation or coating
    • 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/024—Multiple impregnation or coating
    • B01J37/0244—Coatings comprising several layers
    • 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

Abstract

A layered catalyst having significantly improved performance characteristics including greater resistance to poisoning and sintering in automotive exhaust, and comprising an alumina support having a first layer of platinum positioned at the support surface and penetrating the body thereof to a desired depth with a second layer of rhodium or palladium, the second layer being adjacent to the first layer and penetrating the body of the support for a depth beyond that of the first layer, a maximum concentration of platinum being in the first layer together with a mininum concentration of rhodium or palladium and a minimum concentration of platinum with a maximum concentration of rhodium or palladium being in the second layer. The layered catalyst is prepared by impregnation with separate solutions of the catalyst materials, acid treatment of active sites of the support being used to block the sites from the surface through the desired depth of the platinum layer.
GB7828127A 1977-07-15 1978-06-28 Automotive emission control catalyst and method for making same Expired GB2000985B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US81598277A 1977-07-15 1977-07-15
US05/871,706 US4128506A (en) 1978-01-23 1978-01-23 Platinum-rhodium catalyst for automotive emission control

Publications (2)

Publication Number Publication Date
GB2000985A true GB2000985A (en) 1979-01-24
GB2000985B GB2000985B (en) 1982-02-24

Family

ID=27124012

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7828127A Expired GB2000985B (en) 1977-07-15 1978-06-28 Automotive emission control catalyst and method for making same

Country Status (4)

Country Link
JP (1) JPS5419494A (en)
AU (1) AU524724B2 (en)
DE (1) DE2830686A1 (en)
GB (1) GB2000985B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0335847A1 (en) * 1988-03-07 1989-10-04 W.C. Heraeus GmbH Catalyst for purifying exhaust gases and preparation and use thereof
EP1894623A1 (en) * 2006-08-28 2008-03-05 Heesung Catalysts Corporation Three-layered catalyst system for purifying exhaust gases of internal combustion engines
WO2014132034A1 (en) * 2013-02-26 2014-09-04 Johnson Matthey Public Limited Company Oxidation catalyst for internal combustion engine exhaust gas treatment
WO2018177709A1 (en) * 2017-03-29 2018-10-04 IFP Energies Nouvelles Multilayer selective hydrogenation catalyst, preparation and use of same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2023019B (en) * 1978-02-06 1982-10-13 Gen Motors Corp Platinum thodium and palladium catalyst for automotive emission control
US5131224A (en) * 1990-07-23 1992-07-21 General Motors Corporation Method for reducing methane exhaust emissions from natural gas fueled engines

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1498050A (en) * 1974-04-19 1978-01-18 Uop Inc Manufacture and use of group viii metal catalyst

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1498050A (en) * 1974-04-19 1978-01-18 Uop Inc Manufacture and use of group viii metal catalyst

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0335847A1 (en) * 1988-03-07 1989-10-04 W.C. Heraeus GmbH Catalyst for purifying exhaust gases and preparation and use thereof
US4975406A (en) * 1988-03-07 1990-12-04 Svensk Emissionsteknik Ab Catalyst for purifying exhaust gases and preparation thereof
EP1894623A1 (en) * 2006-08-28 2008-03-05 Heesung Catalysts Corporation Three-layered catalyst system for purifying exhaust gases of internal combustion engines
WO2014132034A1 (en) * 2013-02-26 2014-09-04 Johnson Matthey Public Limited Company Oxidation catalyst for internal combustion engine exhaust gas treatment
US9138724B2 (en) 2013-02-26 2015-09-22 Johnson Matthey Public Limited Company Oxidation catalyst for a combustion engine
GB2516133B (en) * 2013-02-26 2017-05-24 Johnson Matthey Plc Oxidation catalyst for a combustion engine
RU2688674C2 (en) * 2013-02-26 2019-05-22 Джонсон Мэтти Паблик Лимитед Компани Oxidation catalyst for treating exhaust gases of internal combustion engine
DE102014102023B4 (en) 2013-02-26 2020-08-06 Johnson Matthey Public Limited Company Vehicle with a diesel engine and exhaust system that includes an oxidation catalytic converter
WO2018177709A1 (en) * 2017-03-29 2018-10-04 IFP Energies Nouvelles Multilayer selective hydrogenation catalyst, preparation and use of same
FR3064500A1 (en) * 2017-03-29 2018-10-05 IFP Energies Nouvelles SELECTIVE HYROGENATION MULTILAYER CATALYST

Also Published As

Publication number Publication date
JPS5419494A (en) 1979-02-14
DE2830686A1 (en) 1979-02-01
AU3803978A (en) 1980-01-17
AU524724B2 (en) 1982-09-30
GB2000985B (en) 1982-02-24

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Legal Events

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