SO_4^(2-)/TiO_2-La_2O_3催化合成丁酮乙二醇缩酮  

Catalytic synthesis of butanone glycol ketal with SO_4^(2-)/TiO_2-La_2O_3

作　　者：白爱民[1] 杜心贤[1] 杨水金[1] 

机构地区：[1]湖北师范学院化学与环境工程系,湖北黄石435002

出　　处：《化工科技》2007年第3期12-14,共3页Science & Technology in Chemical Industry

基　　金：湖北省教育厅教研基金资助项目(20060335)

摘　　要：以稀土改性固体超强酸SO42-/TiO2-La2O3为催化剂,通过丁酮和乙二醇反应合成了丁酮乙二醇缩酮,探讨了SO42-/TiO2-La2O3对缩酮反应的催化活性,较系统地研究了酮醇物质的量比,催化剂用量,反应时间诸因素对产品收率的影响。实验表明:在n(酮)∶n(醇)=1∶2.0,催化剂用量为反应物料总质量的0.50%,环己烷为带水剂,反应时间2.0 h的优化条件下,丁酮乙二醇缩酮的收率可达58.1%。Butanone glycol ketal was synthesized from butanone and ethylene glycol in the presence of SO4^2-/TiO2-La2O3. The factors influencing the synthetic process were discussed and the best conditions were found out. The optimum conditions are： molar ratio of butanone to ethylene glycol is 1 ： 2.0,the quantity of catalyst is equal to 0.50% of feed stocks,the reaction temperature is 79-89℃ ,and the reaction time is 2.0 h. SO4^2-/TiO2-La2O3 is an excellent catalyst, for synthesizing butanone glycol ketal ＇and its yield can reach over 58. 1%.

关 键 词：丁酮乙二醇缩酮 稀土 固体超强酸 催化 缩酮反应 

分 类 号：TQ655[化学工程—精细化工] O626.24[理学—有机化学]