Epoxidation of propylene by using [π-C5H5NC16H33]3[PW4O16] as catalyst and with hydrogen peroxide generated by 2-ethylanthrahydroquinone and molecular oxygen |
| |
Authors: | Ning Zhou Zuwei Xi Guoying Cao Shuang Gao |
| |
Affiliation: | Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, PR China |
| |
Abstract: | The epoxidation of propylene catalyzed by a reaction-controlled phase transfer catalyst π-C5H5NC16H33]3PW4O16] is investigated. The H2O2 is generated by the oxidation of 2-ethylanthrahydroquinone (EAHQ) with molecular oxygen in the organic solvent. Under mild conditions, the selectivity for propylene oxide, based on propylene, is 95%, and the yield, based on 2-ethylanthrahydroquinone, is 85%. During the epoxidation, the catalytic system is homogeneous. However, after the H2O2 is used up, the catalyst can be recovered as a precipitate and can be reused. After the epoxidation reaction, 2-ethylanthraquinone can be regenerated to 2-ethylanthrahydroquinone by catalytic hydrogenation, and no coproduct is produced. |
| |
Keywords: | Propylene Epoxidation Molecular oxygen 2-Ethylanthrahydroquinone Heteropolyoxotungstates |
本文献已被 ScienceDirect 等数据库收录! |
|