摘要
以固载杂多酸盐TiSiW12O40/TiO2为多相催化剂,通过苯甲醛和1,2-丙二醇反应合成苯甲醛1,2-丙二醇缩醛,探讨了TiSiW12O40/TiO2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:TiSiW12O40/TiO2是合成苯甲醛1,2-丙二醇缩醛的良好催化剂,在苯甲醛与1,2-丙二醇的摩尔比为1:1.5,催化剂用量为反应物料总质量的0.3%,环己烷为带水剂,反应时间1.0h的优化条件下,苯甲醛1,2-丙二醇缩醛的收率可达90.0%.
Benzaldehyde 1,2propanediol acetal was synthesized from benzaldehyde and 1,2propanediol in the presence of TiSiW12O40/TiO2. The factors influencing the yield of product and the optimum reaction conditions were discussed. The optimum conditions are molar ratio of benzaldehyde to 1,2propanediol was 1:1.5, the quantity of catalyst was equal to 0.3% feed stock, and the reaction time was 1.0 h. TiSiW12O40/TiO2 was an excellent catalyst to synthesize benzaldehyde 1,2propanediol acetal with a optimal yield up to 90.0%.
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
2003年第1期9-13,共5页
Chemical Reaction Engineering and Technology
基金
湖北省教育厅重点科研基金资助项目(2002A00008)
国家自然科学基金资助项目(29971024)
关键词
苯甲醛
苯甲醛1
2-丙二醇缩醛
杂多酸盐
催化
缩醛化
benzaldehyde 1,2-propanediol acetal
TiSiW_(12)O_(40)/TiO_2
catalysis
acetalization
