Claims
- 1. A process for producing a catalyst body with an active compound on a support body by thermal spraying, which comprises:
thermally spraying an aluminum hydroxide and an aluminum/silicon compound separately from and simultaneously with metallic aluminum onto a support body; supplying a metallic active component; and thermally converting the aluminum hydroxide into an aluminum oxide to form an active compound at the support body.
- 2. The process according to claim 1, which further comprises performing the supplying step by doping the aluminum/silicon compound with the metallic active component prior to the thermal spraying.
- 3. The process according to claim 1, further comprises performing the supplying step by supplying the metallic active component by impregnation.
- 4. The process according to claim 2, wherein the metallic active component is a precious metal.
- 5. The process according to claim 4, wherein the precious metal is selected from the group consisting of Pt, Pd, Rh, and mixture of at least two of Pt, Pd, and Rh.
- 6. The process according to claim 1, wherein the metallic active component is a precious metal.
- 7. The process according to claim 6, wherein the precious metal is selected from the group consisting of Pt, Pd, Rh, and mixture of at least two of Pt, Pd, and Rh.
- 8. The process according to claim 1, which further comprises:
processing the aluminum hydroxide and the aluminum/silicon compound to form a powder mixture; and thermally spraying the aluminum hydroxide and the aluminum/silicon compound together onto the support body.
- 9. The process according to claim 8, which further comprises performing the processing step by processing the aluminum/silicon compound and the aluminum hydroxide to form the powder mixture such that particles of the aluminum/silicon compound are agglomerated with particles of the aluminum hydroxide.
- 10. The process according to claim 1, which further comprises heat treating after the thermal spraying.
- 11. The process according to claim 1, which further comprises performing the thermally spraying step by thermally spraying an aluminum/silicon compound having a higher atomic proportion of silicon than of aluminum.
- 12. The process according to claim 1, wherein the aluminum/silicon compound is an aluminosilicate.
- 13. The process according to claim 12, wherein the aluminosilicate is a zeolite.
- 14. The process according to claim 13, wherein the zeolite is selected from the group consisting of a mordenite, a ZSM-5 zeolite, an H-zeolite, a USY-zeolite, and a beta zeolite.
- 15. The process according to claim 1, wherein the aluminum/silicon compound is a copper/silicon aluminophosphate.
- 16. A catalyst body, comprising:
a support body; a thermally sprayed on active compound thermally sprayed on said support body, said active compound including:
thermally sprayed on metallic aluminum; an aluminum oxide; a thermally sprayed on aluminum/silicon compound; and a metallic active component; and said active compound being produced by separate and simultaneous thermal spraying of said metallic aluminum and said aluminum/silicon compound.
- 17. The catalyst body according to claim 16, wherein:
said aluminum oxide and said aluminum/silicon compound are substantially separate microparticles; and said microparticles are crosslinked to one another by said metallic aluminum.
- 18. The catalyst body according to claim 17, wherein said microparticles are additionally joined to one another by oxygen binding.
- 19. The catalyst body according to claim 16, wherein said metallic active component is incorporated in said aluminum/silicon compound.
- 20. The catalyst body according to claim 16, wherein said metallic active component is a precious metal.
- 21. The catalyst body according to claim 20, wherein said precious metal is selected from the group consisting of Pt, Pd, Rh, and a mixture of at least two of Pt, Pd, and Rh.
- 22. The catalyst body according to claim 19, wherein said metallic active component is a precious metal.
- 23. The catalyst body according to claim 22, wherein said precious metal is selected from the group consisting of Pt, Pd, Rh, and a mixture of at least two of Pt, Pd, and Rh.
- 24. The catalyst body according to claim 16, wherein said aluminum/silicon compound is an aluminosilicate.
- 25. The catalyst body according to claim 24, wherein said aluminosilicate is a zeolite.
- 26. The catalyst body according to claim 25, wherein said zeolite is selected from the group consisting of a mordenite, a ZSM-5 zeolite, an H-zeolite, a USY-zeolite, and a beta zeolite.
- 27. The catalyst body according to claim 16, wherein said aluminum/silicon compound is a copper/silicon aluminophosphate.
Priority Claims (1)
Number |
Date |
Country |
Kind |
198 60 495.5 |
Dec 1998 |
DE |
|
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is a continuation of copending International Application No. PCT/DE99/03996, filed Dec. 15, 1999, which designated the United States.
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/DE99/03996 |
Dec 1999 |
US |
Child |
09894678 |
Jun 2001 |
US |