Vinyl acetate catalyst comprising metallic palladium and gold prepared with potassium aurate
AssigneeCelanese International Corporation
InventorsTao Wang, Jerry A. Broussard
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Abstract
A catalyst for the production of vinyl acetate by reaction of ethylene, oxygen and acetic acid comprising a porous support on the porous surfaces of which is deposited catalytically effective amounts of metallic palladium and gold, said catalyst having been prepared by steps comprising impregnating a porous support, the porous surfaces of which contain a catalytically effective amount of a prereduced metallic palladium, with a solution of potassium aurate, and reducing the potassium aurate to a catalytically effective amount of metallic gold. Alternate embodiments are also disclosed.
Claims11
A method of preparing a catalyst for the production of vinyl acetate by reaction of ethylene, oxygen and acetic acid comprising impregnating a porous support, the porous surfaces of which contain a catalytically effective amount of prereduced palladium with a solution of potassium aurate, and reducing the potassium aurate to a catalytically effective amount of metallic gold.
A method of preparing a catalyst for production of vinyl acetate comprising impregnating a porous support with potassium aurate, followed by contacting with a solution of water-soluble palladium salt, fixing said palladium solution as a water-insoluble compound and. reducing the gold and palladium to their metallic form.
Dependencies are inferred from the claim text.