催化学报 ›› 2006, Vol. 27 ›› Issue (7): 562-566.

• 研究论文 • 上一篇    下一篇

加料方式及底物浓度对Ti-MWW催化剂上环己酮氨肟化反应的影响

宋芬,刘月明,汪玲玲,张海娇,吴海虹,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:2006-07-25 出版日期:2006-07-25 发布日期:2006-07-25

Effects of Feeding Mode and Substrate Concentration on the Cyclohexanone Ammoximation over Ti-MWW Catalysts

SONG Fen, LIU Yueming, WANG Lingling, ZHANG Haijiao, WU Haihong, 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:2006-07-25 Online:2006-07-25 Published:2006-07-25

摘要: 研究了加料方式和底物浓度对钛硅分子筛Ti-MWW催化环己酮液相氨肟化反应的影响. 结果表明,加料方式对 Ti-MWW 催化环己酮氨肟化过程有重要影响,过氧化氢的浓度对反应过程也有一定的影响. 在过氧化氢缓慢加入反应体系的情况下,环己酮转化率和环己酮肟选择性都高于99%, 而且该反应过程以水作溶剂,对环境友好.

关键词: 钛硅分子筛, Ti-MWW分子筛, TS-1分子筛, 环己酮, 环己酮肟, 液相氨肟化

Abstract: The liquid-phase ammoximation of cyclohexanone with ammonia and hydrogen peroxide was conducted over the Ti-MWW catalyst. The operating conditions of the reaction, especially the feeding mode of H2O2 greatly affected the catalytic performance of Ti-MWW. In addition, the concentration of H2O2 also affected the ammoximation reaction. Under the optimum reaction conditions, the cyclohexanone conversion and oxime selectivity were both over 99%.

Key words: titanosilicate zeolite, Ti-MWW zeolite, TS-1 zeolite, cyclohexanone, cyclohexanone oxime, liquid-phase ammoximation