Conversion of Chitosan into 5-Hydroxymethylfurfural via Hydrothermal Synthesis

Publisher: Trans Tech Publications

E-ISSN: 1662-8985|2015|1095|411-414

ISSN: 1022-6680

Source: Advanced Materials Research, Vol.2015, Iss.1095, 2015-04, pp. : 411-414

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Abstract

5-hydroxymethylfurfural (5-HMF) was produced from chitosan by a simple one-pot reaction including hydrolysis and dehydration in the presence of various ionic liquids and Lewis acids. Optimization of the reaction parameters including the screening of different catalysts, the effects of reaction time, temperature was investigated. The optimal reaction conditions are found to be 5 wt.% 1-butyl-3-methylimidazolium hydrogen sulfate ([BMIM][HSO4] ) aqueous solution and 100 mol% AlCl3•6H2O as cooperating catalyst, at 180 °C for 5 h under hydrothermal condition. HMF can be obtained in 25.2 % yield. More importantly, the catalysts can be recycled and exhibited constant activity for 5 successive trials.