二氧化硅负载磷钨钼酸催化合成丁酮乙二醇缩酮  

Catalytic synthesis of butanone glycol ketal by H_3PW_6Mo_6O_(40)/SiO_2

作　　者：杨水金[1] 邓满臣[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》2011年第11期38-40,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：以二氧化硅负载磷钨钼酸(H_3PW_6Mo_6O_(40)/SiO_2)为催化剂,丁酮和乙二醇为原料合成丁酮乙二醇缩酮。探讨了H_3PW_6Mo_6O_(40)/SiO_2对缩酮反应的催化活性,较系统地研究了酮与醇物质的量比、催化剂用量、反应时间等因素对产物收率的影响。实验表明,二氧化硅负载磷钨钼酸催化剂是合成丁酮乙二醇缩酮的良好催化剂,在n(丁酮):n(乙二醇)=1:1.5,催化剂用量占反应物料总质量的0.6%,环己烷10mL作带水剂,反应时间60min的优化条件下,丁酮乙二醇缩酮的平均收率可达86.0%。Butanone glycol ketal was synthesized from butanone and glycol using H_3 PW_6 Mo_6O_（40）/SiO_2 as catalyst. The factors influencing the synthesis were discussed and the best reaction conditions were found out.Experimental results showed that H_3PW_6 Mo_6O_（40）/SiO_2 is an excellent catalyst.The optimum conditions are：molar ratio of butanone to glycol is 1：1.5,the amount of catalyst was equal to 0.6%of feed stocks,and the reaction time is 60min.the yield can reach 86.0%.

关 键 词：丁酮乙二醇缩酮 H_3PW_6Mo_6○_40/Si○_2 催化 

分 类 号：TQ224.2[化学工程—有机化工]