磷钨酸掺杂聚苯胺催化合成丁酮1,2-丙二醇缩酮  

Catalytic synthesis of butanone 1,2-Propanediol Ketal by Phosphtungstic Acid with Polyaniline

作　　者：杨水金[1] 余建勇[1] 孙聚堂[2] 

机构地区：[1]湖北师范学院化学与环境工程系,湖北黄石435002 [2]武汉大学化学与分子科学学院,湖北武汉430072

出　　处：《化学反应工程与工艺》2004年第1期25-28,69,共5页Chemical Reaction Engineering and Technology

基　　金：湖北省教育厅重点科研基金(№.2002A00008);湖北师范学院优秀中青年科技创新团队基金(2003CX18)资助项目。

摘　　要：　制备了磷钨酸掺杂聚苯胺催化剂H3PW12O40/PAn,催化丁酮和1,2-丙二醇反应合成了丁酮1,2-丙二醇缩酮。探讨了磷钨酸掺杂聚苯胺催化剂对缩酮反应的催化活性,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:磷钨酸掺杂聚苯胺是合成丁酮1,2-丙二醇缩酮的良好催化剂,在n(1,2-丙二醇)∶n(丁酮)=2∶1,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2.0h的优化条件下,丁酮1,2-丙二醇缩酮的收率可达75.4%。Butanone 1,2-propanediol ketal was synthesized from butanone and 1,2-propanediol in the presence of phosphtungstic acid with polyaniline (H_3PW_(12)O_(40)/PAn). The factors influencing the synthesis were discussed and the best conditions were found out as will. It was found that the optimum conditions are: molar ratio of 1,2-propanediol glycol to butanone is 2∶1, the quantity of catalyst is equal to 1.0% of feed stocks, and the reaction time is 2.0 h. It should say H_3PW_(12)O_(40)/PAn is an excellent catalyst for synthesizing butanone 1,2-propanediol ketal and its yield can reach over 75.4%.

关 键 词：磷钨酸 聚苯胺 催化合成工艺 丁酮1 2-丙二醇缩酮 带水剂 环己烷 反应时间 

分 类 号：TQ234.2[化学工程—有机化工]