离子液体相转移催化环己醇氧化制备环己酮  

Preparation of Cyclohexanone through Oxidation of Cyclohexanol Using Ionic Liquids as Phase Transfer Catalysts

作　　者：邵丽丽[1] 王雯娟[1] 彭惠琦[1] 王有菲[1] 刘彩华[1] 杨建国[1] 

机构地区：[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

出　　处：《分子催化》2007年第6期520-524,共5页Journal of Molecular Catalysis(China)

基　　金：国家自然科学基金项目(20590366);国家科技支撑计划项目(2006BAE03B06).

摘　　要：以不同种类的离子液体作为相转移催化剂,用双氧水作为氧化剂,Na2WO4·2H2O为催化剂,在适当的反应条件下,能有效进行相转移催化环己醇氧化制备环己酮.实验结果表明,采用酸性离子液体[C16mim]HSO4和[C14mim]HSO4相转移催化合成环己酮,可提高环己酮的产率,具有反应条件温和、操作简便、需用时间短、相转移催化剂可以循环使用等优点.在反应温度为90℃,反应时间为50min条件下,环己醇的转化率高达100%,选择性99%以上.Cyclohexanol was oxidized to cyclohexanone under a mild condition with Na2WO4. 2H2O as catalyst, H2O2 as oxidizing agent and ionic liquids as phase transfer catalysts. The effects of different phase transfer catalysts, the amount of catalyst Na2WO4.2H2O , the amount of H2O02, reaction time, and temperature on the oxidation of cyclohexanol also were studied. The results showed that ionic liquids （[ C16mim] HSO4 and [ C14mim] HSO4） were a kind of efficient phase transfer catalysts for the oxidation of eyelohexanol. The conversion of eyclohexanol and the selectivity to cyclohexanone were about 100% and 99% respectively under optimum reaction conditions （cyclohexanol 0.1 mol, 30% H20225 mL, phase transfer catalyst 4.0 mmol, catalyst Na2WO4 2H2O 5.5 mmol, 90℃ for 50 min）. The activity of phase transfer catalysts still keep high stability after reused 5 times.

关 键 词：环己醇 环己酮 氧化 离子液体 相转移催化剂 

分 类 号：TQ426.91[化学工程] O643.32[理学—物理化学]