MoO2 Formed on Mesoporous Graphene Oxide: Efficient and Stable Catalyst for Epoxidation of Olefins

Gang Bian; Pingping Jiang; Kelei Jiang; Yirui Shen; Linggang Kong; Ling Hu; Yuming Dong; Weijie Zhang

doi:10.1071/CH17089

RESEARCH ARTICLE

MoO₂ Formed on Mesoporous Graphene Oxide: Efficient and Stable Catalyst for Epoxidation of Olefins

Gang Bian ^A , Pingping Jiang ^A ^C , Kelei Jiang ^B , Yirui Shen ^A , Linggang Kong ^A , Ling Hu ^A , Yuming Dong ^A and Weijie Zhang ^A

+ Author Affiliations

- Author Affiliations

^A Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China.

^B Wuxi WeiFu Lida Catalytic Converter Co. Ltd, Wuxi 214177, China.

^C Corresponding author. Email: ppjiang@jiangnan.edu.cn

Australian Journal of Chemistry 70(9) 1039-1047 https://doi.org/10.1071/CH17089
Submitted: 13 February 2017 Accepted: 18 April 2017 Published: 19 May 2017

Abstract

A novel mesoporous MoO₂ composite supported on graphene oxide (m-MoO₂/GO) has been designed and applied as an efficient epoxidation catalyst. The m-MoO₂/GO composite was characterised by X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, Brunauer–Emmet–Teller surface area analysis, field emission scanning electron microscopy, and transmission electron microscopy. Compared with pure mesoporous MoO₂ (m-MoO₂) and amorphous MoO₂-graphene oxide (a-MoO₂/GO), m-MoO₂/GO exhibits the best catalytic activity. The conversion and selectivity for cyclooctene are both over 99 % in 6 h. Remarkably, the mesoporous structure in m-MoO₂/GO which derives from SiO₂ nanospheres endows the catalyst better catalytic performance for long chain olefins: the conversion of methyl oleate can be as high as 82 %. Such a robust catalyst can be easily recycled and reused five times without significant loss of catalytic activity. This novel catalyst is promising in the synthesis of epoxides with a long carbon chain or large ring size.

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MoO2 Formed on Mesoporous Graphene Oxide: Efficient and Stable Catalyst for Epoxidation of Olefins

Abstract

References

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MoO₂ Formed on Mesoporous Graphene Oxide: Efficient and Stable Catalyst for Epoxidation of Olefins