Improved process for the production of supported...

Details Improved process for the production of supported... Improved process for the production of supported...

B - Operations, Transporting

01

J

B01J 37/02 (2006.01) B01J 23/52 (2006.01) B01J 23/58 (2006.01) B01J 23/66 (2006.01) B01J 31/04 (2006.01) C07C 67/055 (2006.01)

Patent

CA 2268663

An improved process for producing high activity and high selectivity supported palladium-gold catalysts is provided. The process involves calcining the support impregnated with a palladium salt and gold salt in a non-reducing atmosphere and at a temperature ranging from 100 °C to 600 °C prior to reducing the metals. Catalysts of the invention are useful for the production of vinyl acetate in the vapor phase by reaction of ethylene, acetic acid and oxygen.

Amélioration apportée à un procédé de production de catalyseurs à support palladium-or qui présentent une grande activité et une sélectivité élevée. Ce procédé consiste à calciner le support imprégné d'un sel de palladium et d'un sel d'or dans une atmosphère non réductrice et à une température comprise entre 100 DEG C et 600 DEG C avant de réduire les métaux. Les catalyseurs de l'invention s'utilisent pour la production d'acétate de vinyle en phase vapeur, par réaction d'éthylène, d'acide acétique et d'oxygène.

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