Chem. J. Chinese Universities ›› 2018, Vol. 39 ›› Issue (5): 941.doi: 10.7503/cjcu20170756

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Rapid Synthesis of CoSAPO-5 Zeolite and Efficiently Catalytic Epoxidation of α-Pinene with Air

XIA Kun, WANG Yi, ZHOU Dan*, HUANG Zhe, WU Zhonghan, 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:2017-11-22 Online:2018-04-08 Published:2018-04-08
  • Contact: ZHOU Dan,XIA Qinghua
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.21571055, 21673069) and the Outstanding Youth Project of Natural Science Foundation of Hubei Province, China(No.2016CFA040).

Abstract:

A green catalytic reaction system with characteristic of high efficiency and energy saving for the synthesis of α-epoxy pinane by catalytic epoxidation of α-pinene with air was constructed. By using rotating hydrothermal route, the necessary time for crystal nucleation and growth of SAPO-5 was shortened distinctly, meanwhile the crystal size was decreased and the crystal size distribution became more uniform. Then, CoSAPO-5 catalyst was prepared by post treatment of SAPO-5 precursor. Under the investigation for various catalytic reaction conditions systematically, including solvent type, the amount of catalyst, reaction temperature, and reaction time, the optimal reaction system was established, under which the conversion of α-pinene can reach 96.5%, the yield of α-epoxy pinane can reach 89.0%, better than the best results reported. Moreover, CoSAPO-5 catalyst was also used in the catalytic epoxidation of other bulky alkene molecules. The recycling experiments indicate that CoSAPO-5 is an excellent heterogeneous recyclability catalyst.

Key words: Rotation hydrothermal synthesis, Zeolite, Catalytic epoxidation, α-Pinene;, CoSAPO-5

CLC Number: 

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