Claims
- 1. A carbon monoxide oxidizing catalyst comprising a porous carrier and, on said carrier, a redox catalyst comprising a palladium salt and a copper salt as main active components and a promotor selected from the group consisting of a vanadium compound and a combination of a vanadium compound and a phosphorous compound, said promotor being capable of forming a redox pair with palladium hydroxide formed during carbon monoxide oxidation.
- 2. A carbon monoxide oxidizing catalyst defined in claim 1, wherein said carrier is .gamma.-alumina.
- 3. A carbon monoxide oxidizing catalyst defined in claim 1, wherein said carrier is silica-alumina.
- 4. A carbon monoxide oxidizing catalyst defined in claim 1, wherein said carrier is zeolite.
- 5. A carbon monoxide oxidizing catalyst defined in claim 1, wherein said carrier is a honeycomb-structured material.
- 6. A carbon monoxide oxidizing catalyst defined in claim 1, wherein said carrier is a sponge-tissue ceramic.
- 7. A carbon monoxide oxidizing catalyst defined in claim 1, wherein said palladium salt is palladium chloride.
- 8. A carbon monoxide oxidizing catalyst defined in claim 1, wherein said palladium salt is palladium sulfate.
- 9. A carbon monoxide oxidizing catalyst defined in claim 1, wherein said palladium salt is palladium nitrate.
- 10. A carbon monoxide oxidizing catalyst defined in claim 1, wherein said copper salt is cupric chloride.
- 11. A carbon monoxide oxidizing catalyst defined in claim 1, wherein said copper salt is copper sulfate.
- 12. A carbon monoxide oxidizing catalyst defined in claim 1, wherein said copper salt is copper nitrate.
- 13. A carbon monoxide oxidizing catalyst defined in claim 1, wherein said vanadium compound is ammonium methavanadate.
- 14. A carbon monoxide oxidizing catalyst defined in claim 1, wherein said vanadium compound is sodium vanadate.
- 15. A carbon monoxide oxidizing catalyst defined in claim 1, wherein said vanadium compound is vanadium oxide.
- 16. A carbon monoxide oxidizing catalyst defined in claim 1, wherein the rate of said palladium salt to said carrier is 0.01-0.2 m mol/g.
- 17. A carbon monoxide catalyst defined in claim 1, wherein the rate of said copper salt to said carrier is 0.1-2.0 m mol/g.
- 18. A carbon monoxide oxidizing catalyst defined in claim 1, wherein the rate of said vanadium compound to said carrier is 0.1-3.0% by weight.
- 19. A carbon monoxide oxidizing catalyst defined in claim 1, wherein the rate of said phosphorus compound to said carrier is 0.1-1.0% by weight.
- 20. A carbon monoxide oxidizing catalyst comprising a porous carrier and, on said carrier, a redox catalyst comprising 0.01-0.2 m mol of a palladium salt per g carrier and 0.1-2.0 m mol of a copper salt per g carrier as main active components and a promotor selected from the group consisting of 0.1-3.0 weight percent of a vanadium compound and a combination of 0.1-3.0 weight percent of a vanadium compound and 0.1-1.0 weight percent of a phosphorous compound, based on the weight of the carrier, said promotor being capable of forming a redox pair with palladium hydroxide formed during carbon monoxide oxidation.
Parent Case Info
This application is a continuation of application Ser. No. 847,518, filed Apr. 3, 1986, abandoned.
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Continuations (1)
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Number |
Date |
Country |
Parent |
847518 |
Apr 1986 |
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