硅钨酸镧绿色合成环己酮乙二醇缩酮  

Green sythesis of cyclohexanone ethylene ketal over LaSiW_(12)O_(40) catalyst

作　　者：许招会[1] 陈德锴[1] 黄宜祥[1] 刘德永[1] 王甡[1] 

机构地区：[1]江西师范大学化学与化工学院,江西南昌330027

出　　处：《工业催化》2005年第10期40-42,共3页Industrial Catalysis

基　　金：江西师范大学青年成长基金资助项目(200400322A)

摘　　要：制备了Keggin结构型硅钨酸镧(LaSiW12O40)复合催化剂,用FT-IR分析方法对催化剂进行了表征。以该催化剂催化合成环己酮乙二醇缩酮为探针反应,考察了反应物配比、催化剂用量、反应时间及催化剂的重复使用性能对催化活性的影响。研究发现,该催化剂对催化环己酮乙二醇缩酮的合成具有较高的催化活性,同时该催化剂具有制备简单和可重复使用性能良好等优点,在较佳条件下,环己酮转化率可达99.0%。A new environmentally-benign Keggin catalyst, LaSiW12O40, was prepared and characterized by FTIR. Catalytic properties of the catalyst were investigated using synthesis of cyclohexanone ethylene ketal from cyclohexanonc and ethylene as the probe reaction,including influence of cyclohexanone/ethylene molar ratio, catalyst dodge, reaction time and repeated use of the catalyst. The catalyst exhibited high activity for synthesis of cyclohexanone ethylene ketal, with cyclohexanone conversion of 99.0 % under faw）rable condition. Meanwhile, it featured simplicity in preparation and good properties in repeated use .

关 键 词：LaSiW12O40催化剂 环己酮乙二醇缩酮 KEGGIN结构 绿色合成 

分 类 号：TQ426.83[化学工程] O623.524[理学—有机化学]