Polymer-supported sulfonimide as a novel water-tolerant Brønsted acid catalyst for esterification of equimolar carboxylic acids and alcohols

✍ Scribed by Zhengbo Zhang; Sanyi Zhou; Jin Nie

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 572 KB
• Volume: 265
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/j.molcata.2006.09.025

✦ Synopsis

A novel polymer-supported sulfonimide (PS-SI), 10-(4 -perfluorobutylsulfonamino sulfonylphenyl)decylpolystyrene, was synthesized and characterized by FT-IR, solid state 19 F NMR, SEM and TGA. The acid strength determination indicated that PS-SI was a strongly acidic polymer. The catalytic performance of the polymer catalyst was tested by direct esterification of equimolar carboxylic acids and alcohols in excess water. The results showed that PS-SI was an effective Brønsted-acid catalyst and could be reused several times without any loss of catalytic activity.