| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1254629 | Chinese Chemical Letters | 2012 | 4 Pages |
Abstract
Several imidazolium ionic liquid (IL)-supported sulfonic acids with different anions, [C3SO3Hmim]HSO4, [C3SO3Hmim]BF4, [C3SO3Hmim]PF6, and [C3SO3Hmim]CF3SO3, were synthesized and applied as catalysts for esterification reaction of benzoic acid. The experimental results indicate that imidazolium IL-supported sulfonic acid containing anion of HSO4− shows the best catalytic activity. Only when less [C3SO3Hmim]HSO4 (0.3 equiv.) applied, was the product obtained with high yield of 97%. Furthermore, the produced esters could be separated by decantation, and the catalyst could be reused after the removal of water.
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Authors
Yue Qin Cai, Guo Qiang Yu, Chuan Duo Liu, Yuan Yuan Xu, Wei Wang,