硅胶负载硅钨酸催化合成环己酮1,2-丙二醇缩酮  

Catalytic Synthesis of Cyclohexanone 1,2-Propanediol Ketal with H_4SiW_(12)O_(40)/SG

作　　者：杨水金[1] 吕松伟[1] 张孟英[1] 王伟平[1] 

机构地区：[1]湖北师范学院化学与环境工程学院,湖北黄石435002

出　　处：《精细与专用化学品》2010年第4期36-38,共3页Fine and Specialty Chemicals

基　　金：湖北省自然科学基金资助项目(2005AABA053)

摘　　要：报道了以硅胶负载硅钨酸为催化剂,通过环己酮和1,2-丙二醇反应合成了环己酮1,2-丙二醇缩酮;通过正交实验优选反应条件,研究了反应物料配比、催化剂用量、反应时间等因素对反应的影响。结果表明,在n(环己酮):n(1,2-丙二醇)=1:1.5、催化剂用量为反应物料总质量的1.5%、带水剂环己烷10mL、反应时间45min的优化条件下,环己酮1,2-丙二醇缩酮的收率可达79.0%。Cyclohexanone 1,2-propanediol ketal was synthesized from cyclohexanone and 1,2-propanediol in the presence of H4SiW12O40/silica gel（SG）.The factors influencing the synthesis were discussed and the best conditions were found out.The optimum conditions are：molar ratio of cyclohexanone to 1,2-propanediol is 1：1.5,the quantity of catalyst is equal to 1.5%of feed stocks,the volume of cyclohexane as the water-carrying agent is 10 mL,and the reaction time is 45 min.H4SiW12O40/SG is an excellent catalyst for synthesizing cyclohexanone 1,2-propanediol ketal and its yield can be up to 79.0%.

关 键 词：环己酮1 2-丙二醇缩酮 硅钨酸 硅胶 催化 

分 类 号：TQ234.2[化学工程—有机化工] TQ655