GB2023019A – Platinum, rhodium and palladium catalyst for automotive emission control
– Google Patents
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
1978-02-06
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.)
1978-02-06
Filing date
1979-01-09
Publication date
1979-12-28
1978-02-06
Priority claimed from US05/875,616
external-priority
patent/US4153579A/en
1979-01-09
Application filed by Motors Liquidation Co
filed
Critical
Motors Liquidation Co
1979-12-28
Publication of GB2023019A
publication
Critical
patent/GB2023019A/en
1982-10-13
Application granted
granted
Critical
1982-10-13
Publication of GB2023019B
publication
Critical
patent/GB2023019B/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
US9433927B2
(en)
2013-01-31
2016-09-06
Umicore Shokubai Japan Co., Ltd.
Exhaust gas purification catalyst and exhaust gas purification method using said 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
1979
1979-01-09
GB
GB7900703A
patent/GB2023019B/en
not_active
Expired
1979-01-11
AU
AU43284/79A
patent/AU524688B2/en
not_active
Expired
1979-01-11
DE
DE19792900951
patent/DE2900951A1/en
active
Granted
1979-01-13
JP
JP179179A
patent/JPS54107492A/en
active
Pending
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
DE2900951C2
(en)
1991-10-31
AU4328479A
(en)
1979-08-16
DE2900951A1
(en)
1979-08-09
GB2023019B
(en)
1982-10-13
JPS54107492A
(en)
1979-08-23
AU524688B2
(en)
1982-09-30
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Legal Events
Date
Code
Title
Description
1999-02-03
PE20
Patent expired after termination of 20 years
Effective date:
19990108
