Chem. J. Chinese Universities ›› 2019, Vol. 40 ›› Issue (3): 528.doi: 10.7503/cjcu20180534

• Physical Chemistry • Previous Articles     Next Articles

Nano-SnO2 as Highly Efficient Catalyst for Epoxidation of Cyclic Olefins with Aqueous H2O2

LU Xinhuan, TAO Peipei, HUANG Fengfeng, ZHANG Xianggui, LIN Zhicheng, PAN Haijun, ZHANG Haifu, ZHOU Dan*(), XIA Qinghua*()   

  1. Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials,Key Laboratory for the Synthesis and Application of Organic Functional Molecules,Ministry of Education, Hubei University, Wuhan 430062, China
  • Received:2019-07-27 Online:2019-01-24 Published:2019-01-24
  • Contact: ZHOU Dan,XIA Qinghua E-mail:d.zhou@hubu.edu.cn;xiaqh518@aliyun.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21503074, 21673069, 21571055), the Hubei Province Outstanding Youth Project of Natural Science, China(No.2016CFA040) and the Hubei Province Students Innovation and Entrepreneurship Training Foundation, China(No.201710512045).

Abstract:

A green catalytic reaction system with characteristic of high efficiency for the synthesis of epoxides by catalytic epoxidation of functionalized olefins with hydrogen peroxide was constructed. SnO2 nanoparticles were prepared by hydrothermal synthesis method and calcined at 320 ℃. Subsequently, all catalysts were characterized by X-ray diffraction(XRD), UV-Vis diffuse reflectance spectroscopy(UV-Vis), Fourier transform infrared spectroscopy(FTIR), scanning electron microscopy(SEM) and transmission electron microscopy(TEM). Then, these catalysts were used to catalyze the epoxidation of various functionalized olefins, including cyclic olefins, styrene and linear olefins, using H2O2 aqueous solutions as oxidants, with high conversion for olefins and high selectivity to epoxides. Under similar reaction conditions, thus-synthesized nano-SnO2-170 catalyst was found to be the most active one in the epoxidation of 1-methyl cyclohexene with H2O2, for which 100% of conversion and 100% selectivity were achieved within 2 h.

Key words: SnO2 nanoparticle, H2O2, Catalytic epoxidation, Cyclic olefin, Linear olefin

CLC Number: 

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