Direct Oxidation of Propylene to Propylene Oxide with Molecular Oxygen

摘要

Recent advances in liquid-phase and gas-phase catalytic oxidation of propylene are summarized. Liquid-phase PO processes involving soluble or insoluble Mo, or V catalysts have been reported which provide moderate conversions and selectivities. Gas-phase PO catalysts mostly have Ag-or TiO_2-based compositions. Direct epoxidation by surface nitrates is a possibility.