Catalysts and processes for the manufacture of vinyl acetate

Details Catalysts and processes for the manufacture of vinyl acetate Catalysts and processes for the manufacture of vinyl acetate

B - Operations, Transporting

01

J

B01J 23/52 (2006.01) B01J 23/44 (2006.01) B01J 23/58 (2006.01) C07C 67/055 (2006.01) C07C 69/15 (2006.01) B01J 37/06 (2006.01)

Patent

CA 2064444

A shell impregnated catalyst for use in the production of vinyl acetate from ethylene, acetic acid and an oxygen containing gas is provided. The catalyst has a productivity of greater than 661 grams of vinyl acetate per hour per litre of catalyst at 150°C and consists essentially of: (1) a catalyst support having a particle diameter from about 3 to about 7mm and a pore volume of 0.2 to 1.5 ml per gram (2) palladium and gold distributed in the outermost 1.0 mm thick layer of the catalyst support particles, and (3) from about 3.5 to 9.5% by weight of potassium acetate. The catalyst is characterised by having a gold to palladium weight ratio in the range 0.60 to 1.25.

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