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Issue 23, 2016
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CO2-Catalysed conversion of carbohydrates to 5-hydroxymethyl furfural

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Abstract

The conversion of sugars to furans has been gaining attention in recent years as a potential source of renewable chemical building blocks. This work considers the viability of CO2 as an acid catalyst for the conversion of carbohydrates to 5-hydroxymethyl furfural (5-HMF). In addition, the effects of secondary solvents for the separation of the produced 5-HMF from the aqueous reaction mixtures are explored. The addition of salts as a means of phase separation to improve the 5-HMF yield was also investigated. The yield of 5-HMF for CO2-catalyzed glucose conversions was increased from 18% to 64% by varying the concentrations of sugar, salt and choice of secondary solvent. This method was also applied to starch, xylan, and cellulose, and was able to achieve 55%, 51% and 22% respectively. This work shows that high yields of 5-HMF could be achieved through the use of CO2-catalyzed carbohydrate conversions.

Graphical abstract: CO2-Catalysed conversion of carbohydrates to 5-hydroxymethyl furfural

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Publication details

The article was received on 07 Jul 2016, accepted on 08 Sep 2016 and first published on 09 Sep 2016


Article type: Paper
DOI: 10.1039/C6GC01853J
Citation: Green Chem., 2016,18, 6305-6310
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    CO2-Catalysed conversion of carbohydrates to 5-hydroxymethyl furfural

    R. Lee, J. Harris, P. Champagne and P. G. Jessop, Green Chem., 2016, 18, 6305
    DOI: 10.1039/C6GC01853J

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