Vinyl acetate catalyst comprising metallic palladium and...

Details Vinyl acetate catalyst comprising metallic palladium and... Vinyl acetate catalyst comprising metallic palladium and...

B - Operations, Transporting

01

J

B01J 23/52 (2006.01) C07C 67/055 (2006.01)

Patent

CA 2333097

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.

L'invention se rapporte à un catalyseur destiné à la production d'acétate de vinyle mettant en jeu une réaction entre de l'éthylène, de l'oxygène et de l'acide acétique. Ledit catalyseur comprend un support poreux sur les surfaces duquel sont déposées des quantités catalytiquement efficaces de palladium et d'or métalliques. On prépare ce catalyseur en imprégnant un support poreux dont les surfaces comportent une quantité catalytiquement efficace d'un palladium métallique préréduit, avec une solution d'aurate de potassium, et en soumettant à une réduction l'aurate de potassium afin d'obtenir une quantité catalytiquement efficace d'or métallique. L'invention se rapporte également à d'autres modes de réalisation.

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