Epoxidation process and catalyst therefor

摘要

A crystalline titanium-containing molecular sieve having a framework structure isomorphous with zeolite beta and containing Si and Ti, but essentially no framework AI, usefully catalyzes the epoxidation of olefin with organic hydroperoxides. The catalyst may be prepared by forming a mixture of a hydrolyzable silicon compound, a hydrolyzable titanium compound, and a benzylsubstituted ammonium species wherein each nitrogen atom bears a single benzyl substituent and subjecting said mixture to hydrothermal treatment at a temperature of from 100 to 200 DEG C for a time effective to form the crystalline titanium-containing molecular sieve.