PREPARATION OF COMPOSITE OXIDATION CATALYST AND USE THEREOF FOR THE PRODUCTION OF UNSATURATED ALDEHYDES AND ACIDS FROM PROPYLENE AND ISOBUTYLENE

摘要

A composite oxidation catalyst is prepared by forming and activating a first oxidation catalyst; forming a second oxidation catalyst; contacting the first catalyst with the second catalyst and a substantially non-aqueous organic fluid to form a composite catalyst; and drying the composite catalyst. The second catalyst may be formed in situ on the first. The catalyst has utility in preparing unsaturated aldehydes and acids from propylene and isobutylene in a single reactor.