Dimerization of alpha-methylstyrene over Nafion/silica composite catalysts

被引：40

作者：

Heidekum, A

Harmer, M

Holderich, WF

机构：

[1] UNIV TECHNOL AACHEN,DEPT CHEM TECHNOL & HETEROGENEOUS CATALYSIS,AACHEN,GERMANY

[2] DUPONT CO INC,WILMINGTON,DE

来源：

CATALYSIS LETTERS | 1997年 / 47卷 / 3-4期

关键词：

alpha-methylstyrene; heterogeneous catalysis; Nafion; ion-exchange resin; solid acid; dimerization; continuous liquid phase; contact time; RESINS;

D O I：

10.1023/A:1019089928990

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The dimerization of alpha-methylstyrene (AMS) 1 over highly dispersed strongly acidic ion exchange resins based on Nafion((R)) and entrapped in a porous silica matrix has been investigated in the continuous liquid phase. Over these new catalysts the dimerization rate is independent of the choice of solvent, which highlights the increased accessibility of the acid sites. Depending upon the reaction conditions different dimerization products are obtained. Complete conversion is achieved even at very high space velocities.

引用

页码：243 / 246

页数：4

共 13 条

[1] SOME NOVEL ASPECTS OF THE DIMERIZATION OF ALPHA-METHYLSTRYRENE WITH ACIDIC ION-EXCHANGE RESINS, CLAYS, AND OTHER ACIDIC MATERIALS AS CATALYSTS [J].