PROCESS FOR EPOXIDIZING OLEFINS WITH HYDROGEN PEROXIDE USING SUPPORTED OXO-DIPEROXO TUNSGSTATE CATALYST COMPLEX

摘要

A quaternary ammonium polyphosphatotungstate deposited on a titanium silicalite support is a useful catalyst for the reaction of an alkene and hydrogen peroxide to form the corresponding epoxide. The polyphosphatotungstate forms soluble, catalytically active species in the presence of hydrogen peroxide, and in this manner can enter the organic phase of an epoxidation reaction. When the hydrogen peroxide is consumed, the polyphosphatotungstate again becomes insoluble, and re-deposits onto the support.