催化学报

催化学报 ›› 2006, Vol. 27 ›› Issue (8): 656-658.

• 研究快讯 • 上一篇    下一篇

Ti-MWW催化烯丙基氯环氧化高效合成环氧氯丙烷

汪玲玲,刘月明,张海娇,吴海虹,蒋咏文,吴鹏,何鸣元   

  1. 华东师范大学化学系上海市绿色化学与化工过程绿色化重点实验室, 上海 200062
  • 收稿日期:2006-08-25 出版日期:2006-08-25 发布日期:2010-09-28

Highly Efficient Synthesis of Epichlorohydrin by Epoxidation of Allyl Chloride over Titanosilicate Ti-MWW

WANG Lingling, LIU Yueming, ZHANG Haijiao, WU Haihong, JIANG Yongwen, WU Peng*, HE Mingyuan   

  1. Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai 200062, China
  • Received:2006-08-25 Online:2006-08-25 Published:2010-09-28

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932

被引次数

59

摘要： 研究了具有MWW结构的新一代钛硅分子筛Ti-MWW催化剂对烯丙基氯液相环氧化高效合成环氧氯丙烷的催化性能. 结果表明, Ti-MWW的催化活性以及产物选择性均优于传统的钛硅分子筛TS-1. 对于Ti-MWW,合适的溶剂为非质子性溶剂丙酮和乙腈,在该溶剂中环氧化物不易发生溶剂化开环反应; 而对于TS-1,合适的溶剂是质子性溶剂甲醇,但甲醇可导致醇醚副产物的生成. 在Ti-MWW催化剂上烯丙基氯的转化率和环氧氯丙烷的选择性都能达到99%以上.

关键词: 钛硅分子筛, Ti-MWW, TS-1, 烯丙基氯, 环氧化, 环氧氯丙烷

Abstract: Liquid-phase epoxidation of allyl chloride with hydrogen peroxide was carried out over Ti-MWW, a novel titanosilicate with the MWW structure, to synthesize epichlorohydrin selectively and effectively. Ti-MWW proved to be superior to the conventional TS-1 catalyst in both catalytic activity and product selectivity. Ti-MWW prefers aprotic solvents of acetone and acetonitrile, both of which can restrain the solvolysis of epichlorohydrin, whereas TS-1 favors a protic solvent of methanol. It is possible to achieve the conversion of allyl chloride and selectivity for epichlorohydrin as high as 99% on Ti-MWW.

Key words: titanosilicate, Ti-MWW, TS-1, allyl chloride, epoxidation, epichlorohydrin