Progress in Green Synthesis Technology of Propylene Oxide by Propylene Epoxidation with H_2O_2

The further development of conventional industrial processes of propylene oxide(PO) using the chlorohydrin route or oxirane technology is limited due to environmental pollution and its high production cost,so that the demand of exploring novel,economical and clean technologies for PO production becomes important.The progresses in green synthesis technology of PO by propylene epoxidation with hydrogen peroxide as the oxidizing agent in recent years are reviewed,includig catalysts for direct epoxidation of propylene and process integration for production of PO and H_2O_2.The prospect of green synthesis of PO is also surveyed and forecasted.