CATALYST PREPARATION

摘要

Process for the preparation of an epoxidation catalyst which process comprises: (a) drying a silica gel carrier at a temperature of from 400 to 1000 °C; (b) hydrolysing the dried silica gel carrier; (c) optionally drying the hydrolysed carrier; and (d) contacting the carrier obtained with a gas stream containing titanium halide to obtain an impregnated carrier, in which process the hydrolysis of step (b) is carried out at a temperature of at most 200 °C.