硅钨钼杂多酸掺杂聚苯胺催化合成苯甲醛1,2-丙二醇缩醛  

Catalytic Synthesis of Benzaldehyde 1,2- Propanediol Acetal with H-4SiW_6Mo_6O_(40)/PAn

作　　者：杨水金[1] 杜心贤[1] 

机构地区：[1]湖北师范学院化学与环境工程系,黄石435002

出　　处：《精细石油化工进展》2006年第1期47-50,共4页Advances in Fine Petrochemicals

基　　金：湖北省自然科学基金(2005ABA053)资助项目。

摘　　要：以自制硅钨钼杂多酸掺杂聚苯胺H4SiW6Mo6O40／PAn为多相催化剂,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,较系统地研究了原料摩尔比、催化剂用量、反应时间诸因素对产品收率的影响。结果表明,适宜反应条件为: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0．25％,环己烷为带水剂,反应时间45 min。上述条件下,苯甲醛1,2-丙二醇缩醛的收率为85．6％。A new environmental friendly catalyst, H4SiW6Mo6040/PAn was prepared. Benzaldehyde 1,2 - propanedid acetal （ Ⅰ ） was synthesized from benzaldehyde （ Ⅱ） and 1,2 - propanediol （ Ⅲ ） in the presence of H4SiW6Mo6O40/PAn （Ⅳ）. The Factors influencing the product yield were discussed and the best reaction conditions were found. Experimental resuh showed that Ⅳ was an excellent catalyst for synthesis of the product. When the molar ratio of benzaldehyde to 1,2 - propanediol was 1.0： 1.5 ,the dosage of H4SiW6Mo6O40/PAn was 0.25% （based on the total mass of reactants） ,and reaction time 45 min,the yield of I could reach 85.6%.

关 键 词：苯甲醛1 2-丙二醇缩醛 H4SiW6Mo6P40/PAn 催化 合成 

分 类 号：TQ244.1[化学工程—有机化工] TQ223.162