期刊
CARBOHYDRATE RESEARCH
卷 442, 期 -, 页码 1-8出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carres.2017.02.002
关键词
5-HydroxyMethylfurfural; N-Acetyl-D-glucosamine; Ionic liquid; Dehydration; Hydrothermal conversion
资金
- National Natural Science Foundation of China [21406166]
- Municipal Natural Science Foundation of Tianjin [15JCQNJC13900]
Here, N-acetyl-D-glucosamine (GlcNAc), the monomer composing the second most abundant biopolymer, chitin, was efficiently converted into 5-hydroxymethylfurfural (5-HMF) using ionic liquid (IL) catalysts in a water/dimethyl sulfoxide (DMSO) mixture solvent. Various reaction parameters, including reaction temperature and time, DMSO/water mass ratios and catalyst dosage were optimized. A series of ILs with different structures were analyzed to explore their impact on GlcNAc conversion. The substrate scope was expanded from GlcNAc to D-glucosamine, chitin, chitosan and monosaccharides, although 5-HMF yields obtained from polymers and other monosaccharides were generally lower than those from GlcNAc. Moreover, the IL N-methylimidazolium hydrogen sulfate ([Hmim][HSO4]) exhibited the best catalyst performance (64.6% yield) when GlcNAc was dehydrated in a DMSO/water mixture at 180 degrees C for 6 h without the addition of extra catalysts. To summarize, these results could provide knowledge essential to the production of valuable chemicals that are derived from renewable marine resources and benefit biofuel-related applications. (C) 2017 Elsevier Ltd. All rights reserved.
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