硅钨钼酸掺杂聚苯胺催化合成丁醛1,2-丙二醇缩醛  

Synthesis of n-butyraldehyde 1,2-propanediol acetal by using H_4SiW_6Mo_6O_(40)/PAn as catalyst

作　　者：白爱民[1] 夏佳[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：《商丘师范学院学报》2007年第6期73-76,共4页Journal of Shangqiu Normal University

基　　金：湖北省自然科学基金(2005ABA053)资助项目

摘　　要：自制了硅钨钼酸(H4SiW6Mo6O40)/PAn(聚苯胺)催化剂.通过丁醛和1,2-丙二醇为原料合成丁醛1,2-丙二醇缩醛,探讨了H4SiW6Mo6O40/PAn催化剂对缩醛反应的催化活性,较系统地研究了原料量比,催化剂用量,反应时间诸因素对产品收率的影响.实验表明:H4SiW6Mo6O40/PAn是合成丁醛1,2-丙二醇缩醛的良好催化剂,在n(丁醛)∶n(1,2-丙二醇)=1∶1.7,催化剂用量为反应物料总质量的1.0%,环己烷为带水剂,反应时间40 min的优化条件下,丁醛1,2-丙二醇缩醛的收率可达78.5%A new environmental friendly catalyst,H4SiW6Mo6O40/PAn was prepared and used for synthesizing n-butyraldehyde 1,2-propanediol acetal.The influence factors of the synthesis were discussed and the best reaction conditions were found that the molar ratio of n-butyraldehyde to 1,2-propanediol is 1∶1.7,the amount of catalyst used is 1.0% of feed stocks,and the reaction time is 40 min.H4SiW6Mo6O40/PAn is an excellent catalyst for synthesizing n-butyraldehyde 1,2-propanediol acetal and the yield can reach over 78.5%.

关 键 词：丁醛1 2-丙二醇缩醛 硅钨钼酸 聚苯胺 催化 缩醛反应 

分 类 号：TQ426.91[化学工程] TQ413.26