应用化学 ›› 1987, Vol. 0 ›› Issue (5): 49-54.

• 研究简报 • 上一篇    下一篇

高分子载体Lewis酸催化剂:苯乙烯、丙烯腈共聚物-四氯化钛复合物

冉瑞成1, 黄进2, 沈吉2   

  1. 1. 北京大学化学系;
    2. 北京化纤工学院应化系
  • 收稿日期:1986-06-14 修回日期:1987-03-17 出版日期:1987-10-10 发布日期:1987-10-10

A POLYMER-SUPPORTED LEWIS ACID CATALYST:POLY(STYRENE-CO-ACRYLONITRILE)-TITANIUM TETRACHLORDDE COMPLEX

Ran Ruicheng1, Huang Jin2, Shen Ji2   

  1. 1. Department of Chemistry, Peking University;
    2. Department of Applied Chemistry, Beijing Chemical Fiber College
  • Received:1986-06-14 Revised:1987-03-17 Published:1987-10-10 Online:1987-10-10

摘要: 高分子催化剂是功能性高分子的重要组成部分,是目前催化剂研究的方向之一,近年来发展很快。我们曾将在空气中强烈水解的Lewis酸四氯化钛与聚苯乙烯反应制备了一种比较稳定的复合物,它对酯化、缩醛、缩酮等有机反应具有良好的催化效能,也可作为α-甲基苯乙烯正离子聚合的有效催化剂,在室温下即可获得高分子量的聚合物。为了进一步改进其稳定性和重复使用性能,本文合成了一种苯乙烯与丙烯脂的共聚交联小球,然后与四氯化钦反应制成了一种更加稳定的高分子载体Lewis酸催化剂,它不但对醋化、缩醛、缩酮等有机反应有很高的催化活性,而且重复使用性能大为改善,是一种很有希望应用于实际的高分子催化剂。

Abstract: The beads of styrene, acrylonitrile(41%) and divinylbenzene (3.6%) copolymer were synthesized and combined with titanium tetrachloride in chloroform to form an n-d bonding complex containing 14.74% of chlorine which correspond to 1.03?10-3mol TiCl4/g complex beads. The complex can be used to catalyze many organic reactions in bigh yield, such as esterification, ketal formation, acetalization, etherification and the Friedel-Crafts alkylation.The complex is very stable, it can be reused at least six times and more active than polysty-rene-titanium tetrachloride complex.