磷钨酸掺杂聚苯胺催化合成丁醛1,2-丙二醇缩醛  

Catalytic synthesis of butyraldehyde 1,2-propanediol acetal with H_3PW_(12)O_(40)/PAn

作　　者：吕宝兰[1] 施少敏[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：《湖北师范学院学报（自然科学版）》2005年第1期40-43,共4页Journal of Hubei Normal University(Natural Science)

基　　金：湖北省教育厅重点科研基金资助项目(B200522004)

摘　　要：以磷钨酸掺杂聚苯胺H3PW12O40 /PAn为催化剂,对以丁醛和 1, 2 -丙二醇为原料合成丁醛 1, 2 -丙二醇缩醛的反应条件进行了研究。实验表明:磷钨酸掺杂聚苯胺催化剂H3PW12O40 /PAn是合成丁醛 1, 2-丙二醇缩醛的良好催化剂,较系统地研究了醛醇摩尔比、催化剂用量、反应时间诸因素对收率的影响。最佳反应条件为:n(丁醛)∶n(1, 2-丙二醇) =1∶1. 2,催化剂用量为反应物料总质量的 0. 5%,环己烷为带水剂,反应时间 50min。上述条件下,丁醛 1, 2-丙二醇缩醛的收率可达 87. 9%.Butyraldehyde 1,2-propanediol acetal was synthesized from butyraldehyde and 1,2-propanediol in the presence of H_3PW_ 12O_ 40/PAn. The factors influencing the synthesis were discussed and the best conditions were found out. The optimum conditions are: the molar ratio of butyraldehyde to 1,2-propanediol is 1∶1.2, and the amount of catalyst used is 0.5% of feed stocks, and the reaction time is 50 min. H_3PW_ 12O_ 40/PAn is an excellent catalyst for synthesizing butyraldehyde 1,2-propanediol acetal and the yield can be up to 87.9%.

关 键 词：丁醛1 2-丙二醇缩醛 磷钨酸掺杂聚苯胺 催化 缩醛化 

分 类 号：TQ655[化学工程—精细化工]