催化学报

催化学报 ›› 2008, Vol. 29 ›› Issue (12): 1271-1276.

• 研究论文 • 上一篇    下一篇

Ti-MWW催化氯丙烯环氧化固定床工艺研究

姚明恺,杨俊霞,赵松,刘月明,吴海虹,吴鹏   

  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:2008-12-25 出版日期:2008-12-25 发布日期:2012-09-20

Study on Fixed-Bed Process of Epoxidation of Allyl Chloride Catalyzed by Ti-MWW

YAO Mingkai, YANG Junxia, ZHAO Song, LIU Yueming*, WU Haihong, WU Peng   

  1. Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai 200062, China
  • Received:2008-12-25 Online:2008-12-25 Published:2012-09-20

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摘要： 以Ti-MWW分子筛为催化剂, H2O2为氧化剂,研究了氯丙烯环氧化制环氧氯丙烷固定床工艺过程的反应规律. 结果表明, H2O2的空速对该反应过程起着非常重要的作用. 优化的反应参数为: 以乙腈为溶剂, 氯丙烯/H2O2摩尔比为5, 反应温度为333 K, H2O2空速为0.44 h-1. 在该条件下氯丙烯转化率、环氧氯丙烷选择性、H2O2转化率及有效利用率分别达到19.0%, 99.9%, 98.0%和97.0%.

关键词: 氯丙烯, 环氧化, 钛硅分子筛, 固定床

Abstract: The epoxidation of allyl chloride with hydrogen peroxide was conducted over Ti-MWW in a fixed-bed reactor. The studies of reaction conditions in the fixe d-bed reactor system showed that the operation parameters had obvious influence s on the epoxidation of allyl chloride (ALC), especially on the WHSV of H2O2 . Low WHSV of H 2O2 promoted the decomposition of H2O2 and decreased the ALC conversion an d the utilization efficiency of H2O2.

Key words: allyl chloride, epoxidation, titanosilicate, fixed bed