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

出　　处：《北华大学学报（自然科学版）》2009年第3期210-213,共4页Journal of Beihua University（Natural Science）

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2．5h条件下，聚缩季戊四醇乙二醛平均收率在67％．Poly-glyoxapentaerythritol acetal was synthesized by using glyoxal and pentaerythritol as the materials, tungstemolybdenumic acid supported on silica gel as catalyst. Various factors affecting yield were studied such as mole-ratio of glyoxal and pentaerythritol, catalyst dose, reaction time. The results showed that yield of polyglyoxapentaerythritol acetal reaches 67% , which mole ratio of glyoxal and pentaerythritol is 1 ： 1. 8, dose of catalyst of total mass of material is 1.5% ,and reaction time is 2.5 h.

关 键 词：杂多酸 聚缩醛 硅胶 催化剂 

分 类 号：O643.322[理学—物理化学]