DE3835184A1 - Platin-freier dreiwegkatalysator - Google Patents
Platin-freier dreiwegkatalysatorInfo
- Publication number
- DE3835184A1 DE3835184A1 DE3835184A DE3835184A DE3835184A1 DE 3835184 A1 DE3835184 A1 DE 3835184A1 DE 3835184 A DE3835184 A DE 3835184A DE 3835184 A DE3835184 A DE 3835184A DE 3835184 A1 DE3835184 A1 DE 3835184A1
- Authority
- DE
- Germany
- Prior art keywords
- alumina
- catalyst
- ceria
- oxide
- rhodium
- 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
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)
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 true DE3835184A1 (de) | 1989-05-11 |
DE3835184C2 DE3835184C2 (fr) | 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 (fr) |
Cited By (4)
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 |
US5496788A (en) * | 1992-02-14 | 1996-03-05 | Degussa Aktiengesellschaft | Coating dispersion for exhaust gas catalysts |
DE19547597A1 (de) * | 1995-12-20 | 1997-07-17 | Degussa | Monolithischer Katalysator für die Abgasreinigung |
US5958829A (en) * | 1992-02-14 | 1999-09-28 | Degussa-Huls Aktiengesellschaft | Coating dispersion for exhaust gas catalysts |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2758451A1 (de) * | 1977-01-06 | 1978-07-13 | Engelhard Min & Chem | Katalysator sowie verfahren zur herstellung und verwendung desselben |
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 |
-
1988
- 1988-10-15 DE DE3835184A patent/DE3835184A1/de active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2758451A1 (de) * | 1977-01-06 | 1978-07-13 | Engelhard Min & Chem | Katalysator sowie verfahren zur herstellung und verwendung desselben |
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 (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5496788A (en) * | 1992-02-14 | 1996-03-05 | Degussa Aktiengesellschaft | Coating dispersion for exhaust gas catalysts |
US5958829A (en) * | 1992-02-14 | 1999-09-28 | Degussa-Huls Aktiengesellschaft | Coating dispersion for exhaust gas catalysts |
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 |
DE19547597A1 (de) * | 1995-12-20 | 1997-07-17 | Degussa | Monolithischer Katalysator für die Abgasreinigung |
DE19547597C2 (de) * | 1995-12-20 | 1999-02-18 | Degussa | Monolithischer Katalysator für die Abgasreinigung |
Also Published As
Publication number | Publication date |
---|---|
DE3835184C2 (fr) | 1992-01-23 |
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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 |