Catalysts on inorganic carriers for producing ethylidene diaceta

Details Catalysts on inorganic carriers for producing ethylidene diaceta Catalysts on inorganic carriers for producing ethylidene diaceta

1993-07-26

1994-10-11

Prescott, Arthur C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

562598, 562599, B01J 3120, B01J 3124, B01J 3118

Patent

active

053548868

ABSTRACT:
The present invention relates to a catalyst, a process for preparing the catalyst and a process for using the catalyst to produce ethylidene diacetate. The conventional preparation methods of ethylidene diacetate suffer from difficulty in separating the catalyst from the product after completion of the reaction. The catalyst of the present invention is simply separated from the product by mere filtration following the completion of reaction. This is a result of using a heterogenized catalyst which is obtained by supporting a homogeneous catalyst in an inorganic carder. The catalyst of the present invention is of the general formula M.sub.a X where M is a compound of a group VIII transition metal, most preferably RhCl.sub.3 .multidot.xH.sub.2 O, and X is an inorganic carrier, preferably selected from the group consisting of kieselguhr, .gamma.-alumina, silica, TiO.sub.2, MgO, ZnO and activated charcoal. Ethylidene diacetate produced using the present method is useful as an intermediate for producing precision chemical articles or as a starting material for the production of vinyl acetate monomer.

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