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Journal of the Iranian Chemical Society

, Volume 15, Issue 7, pp 1535–1543 | Cite as

Magnetic polymer microspheres based on phosphotungstic acid quaternary ammonium salt as an efficient heterogeneous catalyst for epoxidation of cyclohexene

  • Yue You
  • Congying Luo
  • Weixia Zhu
  • Yadong Zhang
Original Paper
  • 82 Downloads

Abstract

The magnetic polymer microsphere catalysts based on phosphotungstic acid quaternary ammonium salt were designed and prepared in order to improve the performance and reusability of the catalysts during the epoxidation of cyclohexene. The structure, particle size and surface property of the new catalysts were characterized by FTIR, laser particle size analysis and SEM, respectively. And the reactivity of the catalysts was detected in cyclohexene epoxidation. Among the obtained catalysts, PS-double-D-PW4 catalyst exhibited the best catalytic performance and high stability for cyclohexene epoxidation. The results showed that the optimum yield of epoxycyclohexane was 83% with a selectivity above 95% after 7 h. And the catalyst still showed a conversion above 78% after six runs.

Keywords

Cyclohexene Epoxycyclohexane Magnetic polymer microspheres catalyst Grafted Phosphotungstic acid quaternary ammonium salt 

Notes

Acknowledgements

This work was supported by the NSFC – He’nan Joint Fund General Project (162300410253) and National Natural Science Foundation of China (21706240).

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Copyright information

© Iranian Chemical Society 2018

Authors and Affiliations

  1. 1.School of Chemical Engineering EnergyZhengzhou UniversityZhengzhouChina

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