GB2023019A - Platinum, rhodium and palladium catalyst for automotive emission control - Google Patents

Platinum, rhodium and palladium catalyst for automotive emission control

Info

Publication number
GB2023019A
GB2023019A GB7900703A GB7900703A GB2023019A GB 2023019 A GB2023019 A GB 2023019A GB 7900703 A GB7900703 A GB 7900703A GB 7900703 A GB7900703 A GB 7900703A GB 2023019 A GB2023019 A GB 2023019A
Authority
GB
United Kingdom
Prior art keywords
rhodium
layer
platinum
palladium
emission control
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
GB7900703A
Other versions
GB2023019B (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 US05/875,616 external-priority patent/US4153579A/en
Application filed by Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of GB2023019A publication Critical patent/GB2023019A/en
Application granted granted Critical
Publication of GB2023019B publication Critical patent/GB2023019B/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
    • 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
    • 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
    • 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 three-component layered catalyst for use in a stoichiometric air/fuel ratio system comprises an alumina support having deposited thereon the catalyst materials platinum, palladium and rhodium and having a first layer of platinum positioned at the support surface, a second layer of catalyst material consisting of rhodium or a mixture of palladium and rhodium adjacent to and radially inward of the first layer, with palladium inward of and adjacent to said second layer where the catalyst material of such layer is rhodium. Cerium oxide may be added to the support for improved performance.
GB7900703A 1978-02-06 1979-01-09 Platinum thodium and palladium catalyst for automotive emission control Expired GB2023019B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/875,616 US4153579A (en) 1978-01-23 1978-02-06 Platinum, rhodium, and palladium catalyst for automotive emission control

Publications (2)

Publication Number Publication Date
GB2023019A true GB2023019A (en) 1979-12-28
GB2023019B GB2023019B (en) 1982-10-13

Family

ID=25366086

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7900703A Expired GB2023019B (en) 1978-02-06 1979-01-09 Platinum thodium and palladium catalyst for automotive emission control

Country Status (4)

Country Link
JP (1) JPS54107492A (en)
AU (1) AU524688B2 (en)
DE (1) DE2900951A1 (en)
GB (1) GB2023019B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018177709A1 (en) * 2017-03-29 2018-10-04 IFP Energies Nouvelles Multilayer selective hydrogenation catalyst, preparation and use of same
CN113646085A (en) * 2019-03-27 2021-11-12 株式会社科特拉 Catalyst for exhaust gas purification

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5212142A (en) * 1991-11-04 1993-05-18 Engelhard Corporation High performance thermally stable catalyst
JP6294837B2 (en) * 2013-01-31 2018-03-14 ユミコア日本触媒株式会社 Exhaust gas purification catalyst and exhaust gas purification method using the catalyst

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257163A (en) * 1965-02-12 1966-06-21 Du Pont Method of treating automobile exhaust gases
GB2000985B (en) * 1977-07-15 1982-02-24 Gen Motors Corp Automotive emission control catalyst and method for making same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN113646085A (en) * 2019-03-27 2021-11-12 株式会社科特拉 Catalyst for exhaust gas purification
CN113646085B (en) * 2019-03-27 2023-11-14 株式会社科特拉 Exhaust gas purifying catalyst

Also Published As

Publication number Publication date
DE2900951A1 (en) 1979-08-09
DE2900951C2 (en) 1991-10-31
AU524688B2 (en) 1982-09-30
GB2023019B (en) 1982-10-13
JPS54107492A (en) 1979-08-23
AU4328479A (en) 1979-08-16

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 19990108