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Issue 12, 2009
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Conversion of carbohydrates into 5-hydroxymethylfurfural in highly concentrated low melting mixtures

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Abstract

Highly concentrated melt systems consisting of choline chloride (ChCl) and up to 50 wt% of carbohydrates, corresponding to carbohydrate concentrations of 2.9 to 3.1 mol/L, have been used for the conversion of the carbohydrate content into 5-hydroxymethylfurfural (HMF) in the presence of catalysts. Apart from the monosaccharides D-fructose and D-glucose, the disaccharide sucrose and the polyfructan inulin were successfully converted into HMF. The reported conditions with short reaction times at high concentrations may allow for high space-time yields, which may be of interest for the development of efficient continuous processes for the conversion of carbohydrates into HMF. In a preliminary ecological evaluation, the ChCl/D-fructose system is compared to other representative solvents for the synthesis of 5-hydroxymethylfurfural. The melts have an inherent low toxicological impact due to their negligible vapour pressure.

Graphical abstract: Conversion of carbohydrates into 5-hydroxymethylfurfural in highly concentrated low melting mixtures

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Article information


Submitted
23 Apr 2009
Accepted
25 Aug 2009
First published
29 Sep 2009

Green Chem., 2009,11, 1948-1954
Article type
Paper

Conversion of carbohydrates into 5-hydroxymethylfurfural in highly concentrated low melting mixtures

F. Ilgen, D. Ott, D. Kralisch, C. Reil, A. Palmberger and B. König, Green Chem., 2009, 11, 1948
DOI: 10.1039/B917548M

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