Titanosilicate‐Based Alkene Epoxidation Catalysis

Epoxides (e.g. ethylene oxide, propylene oxide, epichlorohydrin) are highly useful intermediates in the production of many chemicals, pharmaceuticals, perfumes, and polymers. The conversion of alkene into epoxides over titanosilicate zeolites is of growing importance for academic and industrial scientists. Herein, we describe recent developments in epoxidation of olefins focusing on the use of Ti-substituted zeolites catalyst. We show how the surface chemistry around the Ti sites (e.g. dispersion of Ti, coordination forms of Ti) affect the activity, selectivity, and stability in the epoxidation reaction. Finally, the industrial epoxidation of propene with hydrogen peroxide (HPPO, hydrogen peroxide propene oxide) techniques and processes is further discussed.