磺酸基功能化离子液体催化合成甘油缩环己酮的研究  

Study on catalytic synthesis of ketal by SO_3H functioned ionic liquid

作　　者：鲍少华[1] 权南南[1] 张敬[1] 王箭[1] 杨建国[1] 

机构地区：[1]华东师范大学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：《应用化工》2009年第1期1-4,共4页Applied Chemical Industry

基　　金："十一五"国家科技攻关项目(2006BAE03B06)

摘　　要：研究了在一系列磺酸根功能化的离子液体催化下,丙三醇与环己酮的缩合反应。以磺酸基功能化的吡啶磷酸类离子液体[SO3H-bPy][H2PO4]为催化剂,系统考察了反应时间、酮与醇的配比、催化剂的用量及催化剂重复使用、不同阴离子、阳离子等因素对反应的影响,优化了反应条件。结果表明,离子液体[SO3H-bPy][H2PO4]为催化剂,当环己酮与丙三醇摩尔比为1∶1.5,催化剂用量为0.1 g/1 mol酮,反应2 h,转化率可达99.8%以上,选择性可达100%。证明离子液体对该缩合反应有较好的催化活性和选择性。The ketalization of cyclohexanone with glycerol by using SO3 H functioned ionic liquids as catalysts were studied. The effects of reaction time, mole ratio of reactants and amount of catalyst on yield of ketal were investigated by using the[ SO3H-bPy] [ H2PO4] ionic liquid as catalyst. Results show that the ionic liquid was an efficient catalyst for the ketalization with high conversion and selectivity in mild conditions. Using[ SO3H-bPy] [ H2PO4 ] as catalyst, the optimum reaction condition： molar ratio of cyclohex- anone to glycerol was 1 ： 1.5 ,catalyst amount was 0.1 g/l mol ketone,reaction time was 2 h. Under that condition,conversion was over 99.8% and selectivity was 100%.

关 键 词：磺酸根功能化的离子液体 缩酮 丙三醇 合成 催化 

分 类 号：TQ224.7[化学工程—有机化工]