DE2900951C2 - - Google Patents

Info

Publication number
DE2900951C2
DE2900951C2 DE2900951A DE2900951A DE2900951C2 DE 2900951 C2 DE2900951 C2 DE 2900951C2 DE 2900951 A DE2900951 A DE 2900951A DE 2900951 A DE2900951 A DE 2900951A DE 2900951 C2 DE2900951 C2 DE 2900951C2
Authority
DE
Germany
Prior art keywords
rhodium
catalyst
palladium
solution
carrier
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 - Lifetime
Application number
DE2900951A
Other languages
German (de)
English (en)
Other versions
DE2900951A1 (de
Inventor
Jack Curtis Rochester Mich. Us Summers
Louis Grosse Pointe Woods Mich. Us Hegedus
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 DE2900951A1 publication Critical patent/DE2900951A1/de
Application granted granted Critical
Publication of DE2900951C2 publication Critical patent/DE2900951C2/de
Granted 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)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
DE19792900951 1978-02-06 1979-01-11 Platin, rhodium und palladium enthaltender katalysator mit schichtaufbau zur kraftfahrzeug-abgasaufbereitung Granted DE2900951A1 (de)

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
DE2900951A1 DE2900951A1 (de) 1979-08-09
DE2900951C2 true DE2900951C2 (xx) 1991-10-31

Family

ID=25366086

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792900951 Granted DE2900951A1 (de) 1978-02-06 1979-01-11 Platin, rhodium und palladium enthaltender katalysator mit schichtaufbau zur kraftfahrzeug-abgasaufbereitung

Country Status (4)

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

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
BR112015018456B1 (pt) * 2013-01-31 2020-12-08 Umicore Shokubai Japan Co., Ltd catalisador para purificação de gás de descarga e método de purificação de gás de descarga usando dito catalisador
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
AU524688B2 (en) 1982-09-30
JPS54107492A (en) 1979-08-23
DE2900951A1 (de) 1979-08-09
GB2023019A (en) 1979-12-28
AU4328479A (en) 1979-08-16
GB2023019B (en) 1982-10-13

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition