Al_2O_3-SiO_2催化环己胺氧化制备环己酮肟  

Oxidation of Cyclohexylamine to Cyclohexanone Oxime Catalyzed by Al_2O_3-SiO_2

作　　者：高美香[1] 罗东[1] 毛丽秋[1] 尹笃林[1] 

机构地区：[1]湖南师范大学精细催化合成研究所,长沙410081

出　　处：《应用化学》2013年第1期28-31,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金资助项目(20976043)

摘　　要：以Al2O3-SiO2为催化剂,用双氧水氧化环己胺制备了环己酮肟。考察了溶剂用量、催化剂用量、反应时间和反应温度等因素对催化性能的影响。结果表明,在溶剂乙腈与环己胺体积比为3∶1,催化剂质量分数31.0%,75℃反应5 h后的环己胺转化率为100%,环己酮肟选择性可达83.6%。并对环己胺催化氧化的反应机理作了初步的探讨。The oxidation of cyclohexylamine catalyzed by Al2O3-SiO2 catalyst was carried out under mild conditions. The effects of solvent amount, catalyst amount, reaction time and reaction temperature on the reaction were investigated. Under the conditions of V（acetonitrile）： V（cyclohexylamine） = 3：1, 31.0% mass fraction of catalyst, reaction temperature of 75℃, and reaction time of 5 h, the conversion of cyclohexylamine reaches up to 100% and the selectivity for cyclohexanone oxime is 83.6%. A reaction mechanism is proposed

关 键 词：环己胺 氧化 环己酮肟 

分 类 号：O643[理学—物理化学]