A process for preparing vinyl acetate utilizing a catalyst...

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B01J 23/58 (2006.01) B01J 23/52 (2006.01) B01J 23/56 (2006.01) B01J 23/63 (2006.01) B01J 37/02 (2006.01) B01J 37/16 (2006.01) C07C 67/055 (2006.01)

Patent

CA 2306788

A catalyst for the production of vinyl acetate by reaction of ethylene, oxygen and acetic acid as reactants comprising a porous support on the porous surfaces of which is deposited catalytically effective amounts of metallic palladium and gold and a third metal selected from the group consisting of magnesium calcium, barium, zirconium and cerium, as its oxide or mixture of oxide and metal, said catalyst having been prepared by either of two specified methods (A) or (B). Use of the catalyst results in a reaction of relatively high activity and/or low heavy ends selectivity.

Ce catalyseur entrant dans la production d'acétate de vinyle, obtenu par réaction d'éthylène, d'oxygène et d'acide acétique en tant que substances réagissantes, comporte un support poreux sur les surfaces duquel ont été déposées certaines quantités, efficaces du point de vue catalytique, de palladium, d'or et d'un troisième métal issu du groupe constitué par du magnésium, du calcium, du baryum, du zirconium et du cérium, sous forme de son oxyde ou d'un mélange d'oxyde et de métal. On produit ce catalyseur à l'aide de l'une des méthodes décrites (A) ou (B). L'emploi de ce catalyseur donne lieu à une réaction à activité relativement élevée et/ou à faible sélectivité à l'égard des extrémités lourdes.

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