SO_4^(2-)/TiO_2-WO_3催化合成苯甲醛1,2-丙二醇缩醛(英文)

Synthesis of benzaldehyde 1,2-propanediol acetal catalyzed by SO_4^(2-)/TiO_2-WO_3 solid superacid

报道了以SO2-4/TiO2-WO3为催化剂,对以苯甲醛和1,2-丙二醇为原料合成苯甲醛1,2-丙二醇缩醛的反应条件进行了研究。实验结果表明,SO2-4/TiO2-WO3具有良好的催化活性,最佳反应条件为:苯甲醛与1,2-丙二醇物质的量比为1∶1.25,催化剂的用量为反应物料总量的0.50%,反应时间50min,上述条件下,苯甲醛1,2-丙二醇缩醛的产率为81.7%。

Benzaldehyde 1,2-propanediol acetal was synthesized from benzaldehyde and 1,2-propanediol in the presence of SO^(2-)_4/TiO_2-WO_3. 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∶1.25, the quantity of catalyst is equal to 0.50% feed stock, and the reaction time is 50 min. SO^(2-)_4/TiO_2-WO_3 is an excellent catalyst for synthesizing benzaldehyde 1,2-propanediol acetal and its yield can reach over 81.7%.