Sulfonic acid-functionalized silica-coated magnetic nanoparticle catalysts

被引：229

作者：

Gill, Christopher S. ^{[1
]}

Price, Bryant A. ^{[1
]}

Jones, Christopher W. ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA

来源：

JOURNAL OF CATALYSIS | 2007年 / 251卷 / 01期

关键词：

solid acid catalyst; nanoparticle; silica-coated nanoparticle; supported sulfonic acid; organic/inorganic hybrid catalyst;

D O I：

10.1016/j.jcat.2007.07.007

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：

Four different sulfonic acids are grafted onto silica-coated magnetic nanoparticle supports, yielding magnetic, solid acid catalysts. The hybrid organic/inorganic sulfonic acid catalysts are evaluated in test reactions in terms of activity and recyclability and compared with commercially available heterogeneous acidic resins and homogeneous sulfonic acids. The magnetic, solid acid catalysts exhibit comparable activity to the other commercial and homogeneous catalysts. Recovery tests confirm the presence of surface-bound sulfonic acid functionalities in three of the four catalysts. These results illustrate the utility of magnetic nanoparticles, as a heterogeneous support for the simple recovery of sulfonic acid catalysts. (c) 2007 Elsevier Inc. All rights reserved.

引用

页码：145 / 152

页数：8

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