催化学报

催化学报 ›› 2010, Vol. 31 ›› Issue (1): 95-99.

• 研究论文 • 上一篇    下一篇

钛硅分子筛/H2O2 体系催化合成丁酮肟的反应行为

杨俊霞, 姚明恺, 赵松, 刘月明, 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:2010-01-25 出版日期:2010-01-25 发布日期:2010-01-25

Reaction Behavior for Synthesis of Methyl Ethyl Ketone Oxime Catalyzed by Titanosilicate/H2O2 Systems

YANG Junxia, YAO Mingkai, ZHAO Song, LIU Yueming*, 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:2010-01-25 Online:2010-01-25 Published:2010-01-25

PDF

1556

被引次数

43

摘要： 钛硅分子筛/H2O2 体系催化酮氨肟化反应合成肟的过程中, 产物肟的反应行为直接影响氨肟化过程的反应效率和操作稳定性. 在 Ti-MWW/H2O2 体系催化丁酮氨肟化反应中研究了产物丁酮肟的反应行为, 发现 Ti-MWW 和 H2O2 的共同作用促使丁酮肟发生水解, 生成丁酮和氮氧化物, 使得反应体系从碱性变成了酸性. TS-1/H2O2 体系及产物环己酮肟均存在类似的现象.

关键词: 钛硅分子筛, 过氧化氢, 丁酮, 丁酮肟, 环己酮, 环己酮肟, 水解

Abstract: In the preparation process of oxime over the titanosilicate/H2O2 system, the reaction performance of oxime influenced the efficiency and stability of the process directly. The reaction behavior of methyl ethyl ketone oxime produced from ammoximation of methyl ethyl ketone catalyzed by the Ti-MWW/H2O2 system was studied. The Ti-MWW and H2O2 together resulted in the hydrolysis of methyl ethyl ketone oxime to methyl ethyl ketone, NOx, etc. Thus, the system was from alkalescence to acidity. The same phenomena also existed in the TS-1/H2O2 system for cyclohexanone oxime production. This experimental result was beneficial for the increase of the efficiency and the stability of the process over the titanosilicate/H2O2 system.

Key words: itanosilicate molecular sieve, hydroperoxide, methyl ethyl ketone, methyl ethyl ketone oxime, cyclohexanone, cyclohexanone oxime, hydrolysis