Direct Oxidation of Propylene to Propylene Oxide with Molecular Oxygen: A Review

Sheima Khatib, Ted S Oyama

Research output: Contribution to journalArticle

Abstract

The direct oxidation of propylene to propylene oxide (PO) using molecular oxygen has many advantages over existing chlorohydrin and hydroperoxide process, which produce side products and require complex purification schemes. Recent advances in liquid-phase and gas-phase catalytic oxidation of propylene in the presence of only molecular oxygen as oxidant and in absence of reducing agents are summarized. Liquid-phase PO processes involving soluble or insoluble Mo, W, or V catalysts have been reported which provide moderate conversions and selectivities, but these likely involve autoxidation by homogeneous chain reactions. Gas-phase PO catalysts have been mostly Ag-, Cu-, or TiO2-based substances, although other compositions such as Au-, MoO3-, Bi-based catalysts and photocatalysts have also been suggested as possibilities. The Ag catalysts differ from those used for ethylene oxide production in having high Ag contents and numerous additives. The additives are solid-phase alkali metals,
Original languageEnglish
Pages (from-to)306-344
JournalCatalysis Reviews - Science and Engineering
DOIs
StatePublished - Jul 2015

Fingerprint Dive into the research topics of 'Direct Oxidation of Propylene to Propylene Oxide with Molecular Oxygen: A Review'. Together they form a unique fingerprint.

  • Cite this