Trimethylamine as a Gas-Phase Promoter: Highly Efficient Epoxidation of Propylene over Supported Gold Catalysts

摘要

Propylene oxide (PO) is an important bulk chemical for the production of a wide variety of derivatives, among which polyether polyols and propylene glycol are the main end products.[1] The world PO production of about 5 million tons per year comes from two current industrial processes: the chlorohydrin process and the organic hydroperoxide process (Halcon method). These two methods consist of two reaction stages and produce large amounts of by-products and co-products, which makes optimization difficult.[2]