CATALYST PREPARATION PROCESS, CATALYST, AND A METHOD FOR USING THIS CATALYST Russian patent published in 2006 - IPC B01J27/06 

FIELD: organic synthesis catalysts.

SUBSTANCE: invention relates to a process for preparing catalyst, to catalyst prepared by this process, and to alkenyl carboxylate production process involving reaction of mixture containing olefin, carboxylic acid, and oxygen in presence of catalyst. Catalyst preparation process comprises following stages: (i) providing silica-based carrier subjected to a series of washings with one or several aqueous liquids with pH at least 3 (20°C) or silica-based carrier formed from materials, one or several of them were subjected to indicated series of washings; (ii) precipitating group VIII metal onto carrier; (iii) transforming precipitates group VIII metal into metal particles; and (iv) treating combination group VIII metal/carrier to purify it before or after stage (iii).

EFFECT: stabilized activity and selectivity of catalyst over a long period of time.

14 cl, 7 ex