GB2023019B - Platinum thodium and palladium catalyst for automotive emission control - Google Patents

Platinum thodium and palladium catalyst for automotive emission control

Info

Publication number
GB2023019B
GB2023019B GB7900703A GB7900703A GB2023019B GB 2023019 B GB2023019 B GB 2023019B GB 7900703 A GB7900703 A GB 7900703A GB 7900703 A GB7900703 A GB 7900703A GB 2023019 B GB2023019 B GB 2023019B
Authority
GB
United Kingdom
Prior art keywords
thodium
platinum
emission control
palladium catalyst
automotive emission
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
GB7900703A
Other languages
English (en)
Other versions
GB2023019A (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
General Motors Corp
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 General Motors Corp filed Critical General Motors Corp
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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (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)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
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 GB2023019A (en) 1979-12-28
GB2023019B true 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 (enExample)
AU (1) AU524688B2 (enExample)
DE (1) DE2900951A1 (enExample)
GB (1) GB2023019B (enExample)

Families Citing this family (4)

* 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
WO2014119749A1 (ja) * 2013-01-31 2014-08-07 ユミコア日本触媒株式会社 排ガス浄化用触媒及び該触媒を用いた排ガス浄化方法
FR3064500A1 (fr) * 2017-03-29 2018-10-05 IFP Energies Nouvelles Catalyseur en multicouches d'hyrogenation selective
JP7195995B2 (ja) 2019-03-27 2022-12-26 株式会社キャタラー 排ガス浄化用触媒

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

Also Published As

Publication number Publication date
DE2900951C2 (enExample) 1991-10-31
JPS54107492A (en) 1979-08-23
AU4328479A (en) 1979-08-16
GB2023019A (en) 1979-12-28
DE2900951A1 (de) 1979-08-09
AU524688B2 (en) 1982-09-30

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Legal Events

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

Effective date: 19990108