硅胶负载钨钼杂多酸催化合成聚缩季戊四醇乙二醛  

Synthesis of Poly Glyoxapentaerythritol Acetal Catalyzed by Tungstemolybdenumic Acid Supported on Silica Gel

作　　者：段旭光[1] 曾雷[1] 周崇文[1] 陈科[1] 

机构地区：[1]湖南环境生物职业技术学院,湖南衡阳421005

出　　处：《广东化工》2009年第5期13-15,共3页Guangdong Chemical Industry

基　　金：湖南省教育厅科技项目资助[06D037]

摘　　要：以硅胶负载钨钼杂多酸为催化剂,乙二醛与季戊四醇为原料,合成了聚缩季戊四醇乙二醛,系统地研究了乙二醛与季戊四醇的摩尔比、催化剂用量、反应时间诸因素对收率的影响。结果表明:在n(醛)︰n(季戊四醇)=1︰1.8,催化剂的用量占反应物料总质量的1.5%,反应时间为2.5 h条件下,聚缩季戊四醇乙二醛平均收率在67%。Poly-glyoxapentaerythritol acetal was synthesised via catalyzed by solid acid of tungstemolybdenumic acid supported on silica gel. Various factors affecting yield were studied systematacially, such mole-ratio of glyoxal and pentaerythritol, catalyst dose, reaction time. It was showed that yield of poly-glyoxapentaerythritol acetal reach 67 %, which mole ratio of glyoxal and pentaerythritol was 1 ： 1.8, dose of catalyst to total mass of material was 1.5 %, and reaction time was 2.5 h.

关 键 词：杂多酸 聚缩醛 硅胶 催化剂 

分 类 号：TQ426.91[化学工程]