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Preparation of 5-hydroymethylfurfural by dehydration of fructose in the presence of acidic ionic liquid

Paper ID Volume ID Publish Year Pages File Format Full-Text
52160 46865 2008 6 PDF Available
Title
Preparation of 5-hydroymethylfurfural by dehydration of fructose in the presence of acidic ionic liquid
Abstract

In this paper, preparations of 5-hydroymethylfurfural (HMF) by the dehydration of fructose in the presence of the Brønsted acidic ionic liquid, 3-allyl-1-(4-sulfobutyl)imidazolium trifluoromethanesulfonate, as well as its Lewis acid derivative, 3-allyl-1-(4-sulfurylchloride butyl)imidazolium trifluoromethanesulfonate, were investigated. It was concluded that the type of acidic ionic liquid used played a significant role in the reaction, and the Lewis acidic ionic liquid acts more effectively than its Brønsted acidic counterpart. By means of UV–visible spectroscopy, the acidities of both kinds of ionic liquids were characterized, together with an effort to correlate the relationship between acidity and activity. Moreover, it was demonstrated that when these acidic ionic liquids were immobilized on silica gel, they can be used as effective and reusable solid catalysts for the dehydration reaction of fructose to HMF, offering much better performances for the title reaction than sulfuric acid and sulfonylchloride modified silica gels in terms of activity and reusability.

Keywords
Acidic ionic liquid; HMF; 5-hydroymethylfurfural; UV–visible spectroscopy
First Page Preview
Preparation of 5-hydroymethylfurfural by dehydration of fructose in the presence of acidic ionic liquid
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 6, 31 March 2008, Pages 1383–1388
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis