Claims
- 1. A composition comprising silver, gold, and a titanium-containing support.
- 2. The composition of claim 1 wherein the silver is present in an amount greater than 0.01 and less than 20 weight percent, based on the total weight of the catalyst.
- 3. The composition of claim 1 wherein the gold is present in an amount greater than 0 and less than 20 weight percent, based on the total weight of the catalyst.
- 4. The composition of claim 1 wherein the composition is essentially free of the Group 8 metals of the Periodic Table.
- 5. The composition of claim 1 wherein the catalyst comprises a promoter element.
- 6. The composition of claim 5 wherein the promoter element is selected from the group consisting of zinc, cadmium, Group 1, Group 2, the lanthanide rare earths, the actinide elements, and combinations thereof.
- 7. The composition of claim 5 wherein the Group 1 promoter element is selected from sodium, potassium, rubidium, or cesium; the Group 2 promoter element is selected from magnesium, calcium, or barium; and the lanthanide promoter element is selected from erbium or lutetium.
- 8. The composition of claim 5 wherein the concentration of the promoter element ranges from about 0.01 to about 40 weight percent, based on the total weight of the catalyst composition.
- 9. The composition of claim 1 wherein the titanium-containing support is selected from the group consisting of titanium dioxide, supported titanium dioxide, titanosilicates, promoter metal titanates, titanium dispersed on a catalyst support including as the support promoter metal silicates, and mixtures thereof.
Priority Claims (3)
Number |
Date |
Country |
Kind |
PCT/US97/11414 |
Jun 1997 |
WO |
|
PCT/US97/11415 |
Jun 1997 |
WO |
|
PCT/US97/11417 |
Jun 1997 |
WO |
|
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation of U.S. patent application Ser. No. 09/943,680, filed on Aug. 30, 2001, now abandoned, which is a divisional of U.S. patent application Ser. No. 09/458,136, filed on Dec. 9, 1999, now U.S. Pat. No. 6,323,351, which is a continuation of International Patent Application No. PCT/US97/24270, filed Dec. 18, 1997, which claims the benefit of International Patent Application PCT/US 97/11414, filed Jun. 30, 1997; the benefit of International Patent Application PCT/US 97/11417, filed Jun. 30, 1997; and the benefit of International Patent Application PCT/US 97/11415, filed Jun. 30, 1997.
Government Interests
This invention was made with United States Government support under Award Number 70NANB5H1143 awarded by the National Institute of Standards and Technology. The United States Government has certain rights in the invention.
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Continuations (2)
|
Number |
Date |
Country |
Parent |
09/943680 |
Aug 2001 |
US |
Child |
10/079112 |
|
US |
Parent |
PCT/US97/24270 |
Dec 1997 |
US |
Child |
09/458136 |
|
US |