DE3835184C2 - - Google Patents

Info

Publication number
DE3835184C2
DE3835184C2 DE3835184A DE3835184A DE3835184C2 DE 3835184 C2 DE3835184 C2 DE 3835184C2 DE 3835184 A DE3835184 A DE 3835184A DE 3835184 A DE3835184 A DE 3835184A DE 3835184 C2 DE3835184 C2 DE 3835184C2
Authority
DE
Germany
Prior art keywords
catalyst
alumina
ceria
oxide
optionally
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
DE3835184A
Other languages
German (de)
English (en)
Other versions
DE3835184A1 (de
Inventor
Edgar Dr. 8755 Alzenau De Koberstein
Bernd Dr. 6450 Hanau De Engler
Rainer Dr. 6457 Maintal De Domesle
Herbert 6450 Hanau De Voelker
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
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
Application filed by Degussa GmbH filed Critical Degussa GmbH
Priority to DE3835184A priority Critical patent/DE3835184A1/de
Publication of DE3835184A1 publication Critical patent/DE3835184A1/de
Application granted granted Critical
Publication of DE3835184C2 publication Critical patent/DE3835184C2/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
    • 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
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/56—Platinum group metals
    • B01J23/63—Platinum group metals with rare earths or actinides
    • 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
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
    • B01J23/8933—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/894—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with rare earths or actinides
    • 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)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (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)
DE3835184A 1987-10-30 1988-10-15 Platin-freier dreiwegkatalysator Granted DE3835184A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3835184A DE3835184A1 (de) 1987-10-30 1988-10-15 Platin-freier dreiwegkatalysator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3736811 1987-10-30
DE3835184A DE3835184A1 (de) 1987-10-30 1988-10-15 Platin-freier dreiwegkatalysator

Publications (2)

Publication Number Publication Date
DE3835184A1 DE3835184A1 (de) 1989-05-11
DE3835184C2 true DE3835184C2 (it) 1992-01-23

Family

ID=25861289

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3835184A Granted DE3835184A1 (de) 1987-10-30 1988-10-15 Platin-freier dreiwegkatalysator

Country Status (1)

Country Link
DE (1) DE3835184A1 (it)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4316508A1 (de) * 1992-07-30 1994-02-03 Ngk Insulators Ltd Katalysator zur Abgasreinigung und Verfahren zu seiner Herstellung
DE19547599A1 (de) * 1995-12-20 1997-06-26 Degussa Monolithischer Katalysator für die Abgasreinigung
DE102007019197A1 (de) * 2007-04-20 2008-10-23 Volkswagen Ag Abgasnachbehandlung mit verringerter Rhodiumbeladung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5958829A (en) * 1992-02-14 1999-09-28 Degussa-Huls Aktiengesellschaft Coating dispersion for exhaust gas catalysts
DE4244712C2 (de) * 1992-02-14 1996-09-05 Degussa Beschichtungsdispersion zur Herstellung von kalysefördernden Überzügen auf einem inerten, strukturverstärkenden Körper
DE19547597C2 (de) * 1995-12-20 1999-02-18 Degussa Monolithischer Katalysator für die Abgasreinigung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4206087A (en) * 1977-01-06 1980-06-03 Engelhard Minerals & Chemicals Corporation Catalyst for reducing pollutants in waste gas streams and process for preparing the catalyst
DE3223500A1 (de) * 1982-06-24 1983-12-29 Degussa Ag, 6000 Frankfurt Katalysator zur reinigung der abgase von verbrennungskraftmaschinen, verfahren zur herstellung des katalysators und verwendung

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4316508A1 (de) * 1992-07-30 1994-02-03 Ngk Insulators Ltd Katalysator zur Abgasreinigung und Verfahren zu seiner Herstellung
US5439865A (en) * 1992-07-30 1995-08-08 Ngk Insulators, Ltd. Catalyst for exhaust gas purification and process for production thereof
DE19547599A1 (de) * 1995-12-20 1997-06-26 Degussa Monolithischer Katalysator für die Abgasreinigung
DE19547599C2 (de) * 1995-12-20 1999-02-25 Degussa Monolithischer Katalysator für die Abgasreinigung
DE102007019197A1 (de) * 2007-04-20 2008-10-23 Volkswagen Ag Abgasnachbehandlung mit verringerter Rhodiumbeladung

Also Published As

Publication number Publication date
DE3835184A1 (de) 1989-05-11

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee