H_3PW_(12)O_(40)/TiO_2-SiO_2催化合成环己酮乙二醇缩酮  

Catalytic Synthesis of Cyclohexanone Ethylene Ketal with H_3PW_(12)O_(40)/TiO_2-SiO_2

作　　者：杨水金[1] 杨志远[1] 黄锦[1] 

机构地区：[1]湖北师范学院化学化工学院,湖北黄石435002

出　　处：《精细石油化工进展》2014年第6期48-50,54,共4页Advances in Fine Petrochemicals

基　　金：湖北高校2013年省大学生创新创业训练计划项目(201313256004)

摘　　要：采用浸渍法制备H3PW12O40/TiO2-SiO2催化剂,以环己酮和乙二醇为原料合成环己酮乙二醇缩酮。实验考察了环己酮与乙二醇物质的量比、催化剂用量、反应时间对收率的影响。结果表明,H3PW12O40/TiO2-SiO2催化剂是合成环己酮乙二醇缩酮的良好催化剂,确定了最佳合成条件:n(环己酮)∶n(乙二醇)=1∶1.4,催化剂用量为反应物料总质量的0.8%,反应时间45 min,带水剂环己烷用量为6 m L;此条件下环己酮乙二醇缩酮收率可达77.6%。Cyclohexanone and ethylene glycol were used to synthesize cyclohexanone ethylene ketal with H3PW12O40/ TiO2-SiO2 as the catalyst which was prepared with method of impregnation.The effects of the molar ratio of cyclohexanone to ethylene glycol,catalyst usage,and reaction time on the yield were studied in experiment.The results of experiment have shown that H3PW12O40/ TiO2-SiO2 is a good catalyst for the synthesis of cyclohexanone ethylene ketal.The optimum synthesis conditions were identified：n（cyclohexanone） ：n（ethylene glycol） = 1：1.4,catalyst usage is 0.8% of the total mass of reaction materials,and the usage of cyclohexane,i.e.the water carrying agent,is 6 m L.The yield of cyclohexanone ethylene ketal reaches 77.6% at such conditions.

关 键 词：环己酮乙二醇缩酮 磷钨杂多酸 二氧化钛-二氧化硅 催化合成 

分 类 号：O623.5[理学—有机化学]