EP0589393A2
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EP
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Method for purifying oxygen rich exhaust gas
Assignee: Cataler Corp
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Filing: 1993-09-20
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Granted: —
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Expires: 2013-09-20
Abstract
Abstract A method for purifying an oxygen rich exhaust gas by simultaneously removing the carbon monoxide, hydrocarbons, and nitrogen oxides contained in the exhaust gas, which comprises: bringing the oxygen rich exhaust gas into contact with an exhaust gas purifying catalyst comprised of (i) at least one noble metal selected from the group consisting of platinum and palladium (ii) barium, and (iii) at least one metal selected from the group consisting of alkali metals, iron, nickel, cobalt and magnesium, supported on a carrier composed of a porous substance.
Inventors
- 👤 Takaaki Kanazawa
- 👤 Shinichi Matsumoto
- 👤 Satoshi Iguchi
- 👤 Kenji Katoh
- 👤 Toshiaki Tanaka
- 👤 Shinichi Takeshima
- 👤 Tsuneyuki Tanizawa
- 👤 Koichi c/o Cataler Ind. Co. Ltd. Kasahara
- 👤 Syuji C/O Cataler Ind. Co. Ltd. Tateishi
- 👤 Hideaki Muraki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 03:50
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/9445; B01D53/945; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/58; B01J23/70; B01J23/89; B01J23/8933; B01J23/8946; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
87 words
A method for purifying an oxygen rich exhaust gas by simultaneously removing the carbon monoxide, hydrocarbons, and nitrogen oxides contained in the exhaust gas, which comprises: bringing the oxygen rich exhaust gas into contact with an exhaust gas purifying catalyst comprised of (i) at least one noble metal selected from the group consisting of platinum and palladium (ii) barium, and (iii) at least one metal selected from the group consisting of alkali metals, iron, nickel, cobalt and magnesium, supported on a carrier composed of a porous substance.
Claim 2
Dependent Claim
24 words
A method as claimed in claim 1, whrein said carrier is selected from the group consisting of alumina, zeolite, zirconia, silica alumina, and silica.
Claim 3
Dependent Claim
24 words
A method as claimed in claim 1, wherein the amount of the noble metal (i) supported is 0.1 to 10.0 g/liter of the carrier.
Claim 4
Dependent Claim
23 words
A method as claimed in claim 1, wherein the amount of the barium (ii) supported is 0.05 to 10.0 mol/liter of the carrier.
Claim 5
Dependent Claim
23 words
A method as claimed in claim 1, wherein the amount of the metal (iii) supported is 0.02 to 10.0 mol/liter of the carrier.
Claim 6
Dependent Claim
15 words
A method as claimed in claim 1, wherein rhodium is further included in the catalyst.
Claim 7
Dependent Claim
22 words
A method as claimed in claim 6, wherein the amount supported of the rhodium is 0.05 to 0.5 g/liter of the catalyst.
References Cited (Backward Citations)
No citation records indexed.
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