应用化学

• 研究论文 • 上一篇    下一篇

NaY型沸石分子筛催化环己胺氧化制备环己酮肟

罗东,高美香,毛丽秋*,尹笃林   

  1. (石化新材料与资源精细利用国家地方联合工程实验室,湖南师范大学化学化工学院 长沙 410081)
  • 收稿日期:2013-01-29 修回日期:2013-03-26 出版日期:2013-12-10 发布日期:2013-12-10
  • 通讯作者: 毛丽秋,教授; Tel:0731-88872576; Fax:0731-88872531; E-mail:mlq1010@126.com; 研究方向:应用有机
  • 基金资助:
    国家自然科学基金资助项目(20976043);湖南省高校科技创新团队支持计划资助

Oxidation of Cyclohexylamine to Cyclohexanone Oxime Catalyzed by NaY Zeolite Molecular Sieves

LUO Dong, GAO Meixiang, MAO Liqiu*, YIN Dulin   

  1. (National & Local Joint Engineering Laboratory for New Petro-chemical Materials
    and Fine Utilization of Resources,College of Chemistry and Chemical 
    Engineering,Hunan Normal University,Changsha 410081,China)
  • Received:2013-01-29 Revised:2013-03-26 Published:2013-12-10 Online:2013-12-10
  • Contact: mao liqiu

摘要: 考察了系列氧化剂、催化剂和溶剂对环己胺液相氧化制备环己酮肟的影响,发现以乙腈为溶剂,过氧化氢为氧化剂,NaY型沸石分子筛对该反应具有优良的催化性能。 对该反应体系进行了五因素四水平的正交实验,确定了适宜的催化剂用量、溶剂用量、反应时间、反应温度和氧化剂用量,比较分析了各因素对环己胺转化率和环己酮肟选择性的影响。 确定了环己胺液相氧化反应的最佳工艺条件为:环己胺为3 mL,催化剂为03 g,环己胺、溶剂和氧化剂的体积比为1∶3∶3,65 ℃反应2 h。 讨论了环己胺液相催化氧化的反应机理。

关键词: 环己胺, 氧化, 环己酮肟, 过氧化氢, NaY催化剂

Abstract: The liquid phase cyclohexyamine oxidation reaction to prepare cyclohexanone oxime on NaY zeolite catalyst was studied. The effects of oxidant and solvent on the reaction were investigated. The results show that NaY zeolite has the best catalytic performance when acetonitrile and hydrogen peroxide were used as solvent and oxidant respectively. An orthogonal experimental method to study the response of the optimum conditions was carried out. The results show that the effects of the amount of catalyst, the amount of solvent, reaction time, reaction temperature and amount of oxidant on the yield of cyclohexanone oxime decrease in turn. The optimal reaction conditions are as follows:0.3 g catalyst, V(cyclohexylamine)∶V(solvents)∶V(oxidants)=1∶3∶3, 65 ℃ and 2 h.

Key words: cyclohexylamine, oxidation, cyclohexanone oxime, hydrogen peroxide, NaY catalyst

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