中华医学超声杂志

应用化学 ›› 2009, Vol. 26 ›› Issue (09): 1114-1116.

• 研究简报 • 上一篇    下一篇

磷钨酸-拟薄水铝石负载催化剂合成对羟基苯甲酸乙酯

叶天旭*,刘京燕,张斌,马雪妮   

  1. (中国石油大学(华东)化学化工学院 青岛   266555)
  • 收稿日期:2008-08-28 修回日期:2009-03-20 出版日期:2009-09-10 发布日期:2009-09-10
  • 通讯作者: 叶天旭，男，博士，副教授; E-mail:xinzi1997@sina.com; 研究方向：精细化工和杂多酸等新材料的开发
  • 基金资助:
    山东省自然科学青年基金资助项目（Y08059）

The Research of Phosphatotungstic Acids Catalysts Supported On Alumina

 YE Tian-Xu*, LIU Jing-Yan, ZHANG Bin, MA Xue-Ni   

  1. (College of Chemistry & Chemical Engineering,China University of Petroleum,Qingdao 266555)
  • Received:2008-08-28 Revised:2009-03-20 Published:2009-09-10 Online:2009-09-10

PDF

1642

被引次数

18 | 5

摘要：

以拟薄水铝石固载的磷钨酸为催化剂，通过对羟基苯甲酸乙酯的合成产率及磷钨酸的溶脱率的测定，考察催化剂的催化性能和固载程度。结果表明，对羟基苯甲酸乙酯的合成最高产率达到83.8%，溶脱率为2.8%。重复使用6次后，总的溶脱率为12.5%。由此可见，该催化剂是一种固载程度良好的环境友好型催化剂。

关键词: 磷钨酸, 拟薄水铝石, 载体, 催化

Abstract:

Phosphatotungstic acids (H3PW12O40, PW12) supported on alumina are employed to catalysis the synthesis of ethyl p-hydroxybenzoate. Through the yield of ethyl p-hydroxyben- zoate and the dissolution of HPAs, we research the function and strength of the catalyst. We know that the yield of ethyl p-hydroxybenzoate is up to 83.8%, the rate of dissolution of pho- sohotungstic acid is 2.8%. Even after the catalyst was recycled for six runs with only 12.5%, the rate of dissolution of phosohotungstic acid.Therefore, it is a kind of effective and environ- mental friendly esterification catalyst.

Key words: phosphatotungstic acids, alumina, carriers, catalysis

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