Two step gold addition method for preparing a vinyl acetate catalyst
US5691267A · kind A · utility
66Cited by
4References
29Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 13, 1996 |
| Grant date | Nov 25, 1997 |
| Priority date | — |
| Expiry date | Aug 13, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/055
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for preparing a catalyst wherein a catalytic carrier is impregnated with water-soluble palladium and gold compounds followed by fixing and then reducing the fixed palladium and gold compounds to palladium and gold metal followed by impregnating the carrier with a second amount of a water-soluble gold compound. The second amount of gold compound is fixed then reduced to gold metal. The catalyst then is impregnated with an alkali metal acetate such as potassium acetate. The catalyst can be employed to synthesize unsaturated esters such as vinyl acetate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.