Citation: Ying LU, Meng LI, Rong Hua ZHANG, Zu Wei XI, Shuang GA. A New Quaternary Ammonium Heteropolyoxotungstate Catalyst for Propylene Epoxidation to Propylene Oxide[J]. Chinese Chemical Letters, ;2004, 15(12): 1491-1493. shu

A New Quaternary Ammonium Heteropolyoxotungstate Catalyst for Propylene Epoxidation to Propylene Oxide

Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023

Received Date: 5 November 2003

Fund Project: This work was financially supported by the National Natural Science Foundation of China (20233050).

A new quaternary ammonium heteropolyoxotungstant (cat. C) is prepared and characterized. And the cat. C also is an reaction-controlled phase-transfer catalyst. The catalytic system of O₂/EAHQ (2-ethylanthrahydroquinone)/cat.c is used for the epoxidation of propylene.Under the optimal conditions, the yield of propylene oxide based on EAHQ is 84.1%, the selectivity for propylene oxide based on propylene is 99.8% and the conversion ofpropylene based on EAHQ is 84.3%. The cat.c precipitates after the epoxidation reaction for easy separation.The cat. C is stable enough to be recycled three times without any loss in selectivity.
- Epoxidation,
- propylene,
- reaction-controlled phase-transfer catalyst
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