Direct epoxidation process using a mixed catalyst system
US7696367B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Apr 10, 2007 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Dec 21, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D301/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention is a process for epoxidizing an olefin with hydrogen and oxygen in the presence of a catalyst mixture containing a titanium or vanadium zeolite and a supported catalyst comprising palladium, gold, and an inorganic oxide carrier. Prior to its use in the epoxidation process, the supported catalyst is calcined in the presence of oxygen at a temperature from 450 to 800° C. and reduced in the presence of hydrogen at a temperature greater than 20° C. The process results in significantly reduced alkane byproduct formed by the hydrogenation of olefin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.