Claims
- 1. A process for carrying out the water gas shift reaction comprising employing a methane production suppressing water gas shift reaction catalyst, wherein the methane production suppressing water gas shift reaction catalyst comprises a catalytic agent comprising at least one member selected from the group consisting of Rh, Pd and Pt; and a methane production suppressing effective amount of zinc oxide.
- 2. The process of claim 1, wherein the methane production suppressing water gas shift reaction catalyst comprises a support.
- 3. The process of claim 2, wherein the support comprises activated alumina.
- 4. The process of claim 2, wherein the support comprises zinc oxide.
- 5. The process of claim 2, wherein the support has a BET surface area of at least 10 m2/g.
- 6. The process of claim 2, wherein the methane production suppressing water gas shift reaction catalyst further comprises a promoter.
- 7. The process of claim 6, wherein the promoter comprises at least one member selected from the group consisting of CeO2, Nd2O3, Pr2O3, TiO2, Fe2O3, NiO, MnO2, and Co2O3.
- 8. The process of claim 7, wherein the promoter is ceria calculated as CeO2.
- 9. The process of claim 2, further comprising a monolith, wherein the methane production suppressing water gas shift reaction catalyst is deposited on the monolith as a washcoat composition.
- 10. The process of claim 9, wherein the catalytic agent is Pt.
- 11. The process of claim 9, wherein the support is alumina.
- 12. The process of claim 1, wherein the catalytic agent is Pt and the support is alumina.
- 13. The process of claim 1, wherein the process further comprises the steps of:providing an input gas stream; contacting the input gas stream with the methane production suppressing water gas shift reaction catalyst; and catalyzing the water gas shift reaction with the methane production suppressing water gas shift reaction catalyst.
- 14. The process of claim 13, wherein the methane production suppressing water gas shift reaction catalyst comprises: (i) alumina support particles; (ii) zinc oxide calculated as ZnO; (iii) Pt;wherein the input gas stream includes: (i) between about 1% by volume and about 10% by volume CO; (ii) at least 30% by volume hydrogen; and (iii) at least 15% by volume H2O; and wherein the input gas stream is characterized by a space velocity greater than 500 hr−1 particle VHSV.
- 15. The process of claim 13, wherein the methane production suppressing water gas shift reaction catalyst comprises: (i) zinc oxide support particles calculated as ZnO; (ii) ceria calculated as CeO2; (iii) Pt;wherein the input gas stream includes: (i) between about 1% by volume and about 10% by volume CO; (ii) at least 30% by volume hydrogen; and (iii) at least 15% by volume H2O; and wherein the input gas steam is characterized by a space velocity greater than about 500 hr−1 particle VHSV.
- 16. The process of claim 13, wherein the methane production suppressing water gas shift reaction catalyst comprises: (i) an alumina support; (ii) zinc oxide calculated as ZnO; (iii) Pt;wherein the methane production suppressing water gas shift catalyst is in the form of a washcoat composition deposited on a monolith.
CROSS REFERENCE TO RELATED APPLICATION
This application is a divisional of U.S. application Ser. No. 09/670,218, filed Sep. 25, 2000, which is incorporated herein by reference, abandoned.
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