Ilgen, Florian and Ott, Denise and Kralisch, Dana and Reil, Christian and Palmberger, Agnes and Koenig, Burkhard (2009) Conversion of carbohydrates into 5-hydroxymethylfurfural in highly concentrated low melting mixtures. GREEN CHEMISTRY, 11 (12). pp. 1948-1954. ISSN 1463-9262, 1463-9270
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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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ION-EXCHANGE-RESIN; UREA-SALT MIXTURES; D-FRUCTOSE; LANTHANIDE(III) IONS; SELECTIVE CONVERSION; CATALYTIC-ACTIVITY; SUBCRITICAL WATER; ORGANIC-REACTIONS; DEHYDRATION; LIQUIDS; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Burkhard König |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 12 Oct 2020 09:00 |
| Last Modified: | 12 Oct 2020 09:00 |
| URI: | https://pred.uni-regensburg.de/id/eprint/29732 |
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