H_6 P_2 W_(18) O_(62) /SiO_2 催化合成苯甲醛1,2-丙二醇缩醛  

Synthesis of benzaldehyde 1,2- propanediol acetal catalyzed with H_6 P_2 W_(18) O_(62)/SiO_2

作　　者：杜晓刚 周熠 杨水金 

机构地区：[1]湖北师范大学化学化工学院,湖北黄石435002

出　　处：《商丘师范学院学报》2017年第3期42-45,共4页Journal of Shangqiu Normal University

基　　金：湖北师范学院2015年本科生科研立项项目(2015079)

摘　　要：探讨以H_6 P_2 W_(18) O_(62)/SiO_2为催化剂,以苯甲醛、1,2-丙二醇为原料催化合成苯甲醛1,2-丙二醇缩醛反应的催化活性,较系统地研究了醛醇物质量比,催化剂用量,带水剂用量及反应时间等因素对产物收率的影响.实验表明:固定苯甲醛为0.2 mol,n(苯甲醛)∶n(1,2-丙二醇)=1∶1.3,催化剂的用量占反应物料总质量的0.8%,环己烷的体积为6 m L,反应时间为60 min优化条件下,苯甲醛1,2-丙二醇缩醛收率可达67.1%.Benzaldehyde 1,2 -propanediol acetal was synthesis from benzaldehyde and 1,2 -propanediol in thepresence of H6P2W18O62/SiO2. The factors influencing the synthesis were discussed and the best conditions were found out. The optimum conditions are ： molar ratio of benzaldehyde to 1,2 - propanediol is 1： 1.3, the mass ratio of the catalyst used to the reactants is 0.8%, cyclohexane as carrying - water reagent, and the reaction time is 60min. H6P2W18O62/SiO2 is an excellent catalyst for synthetizing benzaldehyde 1,2 -propanediol acetal and its yield can reach over 67.1%.

关 键 词：苯甲醛1 2-丙二醇缩醛 H6 P2 W18 O62/SiO2 催化 

分 类 号：TQ655[化学工程—精细化工]