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US 12,065,393 B2Granted
Gold containing catalyst, method of preparation and use
AssigneeJohnson Matthey Public Limited Company
InventorsNicholas Carthey, Peter Johnston
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Abstract
The present invention relates to improvements in known gold containing catalysts. In particular, the present invention relates to improving the stability and/or inhibition of deactivation of gold containing catalysts via the addition of an inorganic oxide, hydroxide, oxo-salt or oxo-acid. There is also disclosed a method for preparing said catalyst most suitably via an impregnation method. Such catalysts are useful in the production of vinyl chloride monomer.
Claims11
A catalyst comprising:
- a complex of gold with a sulphur-containing ligand;
- and
- an additive that is an oxide, hydroxide, oxo-salt, or oxo-acid of silicon;
- on a support comprising carbon,
- wherein the catalyst contains less than 0.5% of gold by weight based on the total weight of the catalyst;
- and,
- wherein the catalyst has a silicon content of 0.1-10 wt % based on the total weight of the catalyst.
4 more elements
Dependencies are inferred from the claim text.