期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 157, 期 -, 页码 368-376出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2020.04.148
关键词
Heterogeneous catalysis; Sulfonated chitosan-derived carbon; Fructose; 5-Hydroxymethylfurfural
资金
- National Natural Science Foundation of China [31730106, 31770623]
A novel sulfonated chitosan-derived carbon-based catalyst was successfully prepared via isoamyl nitrite-assisted sulfanilic add sulfonation, and its catalytic activity was examined using dehydration of fructose. The structural and chemical properties of sulfonated chitosan-derived carbon were characterized by SEM, FTIR, XRD, XPS, element analysis, N-2 adsorption-desorption experiment, and acid-base titration experiment. KOH was used as activating agent in the synthesizing of carbon supports, and it was found that properly increasing the dose of KOH during activation stage had a positive effect on the subsequent sulfonation of prepared activated carbon. 4KSCC, with the highest sulfonation degree (2.04 mmol/g), exhibited high performance for the conversion of fructose to HMF in various solvent, and an optimal HMF yield of 80.9% was obtained at 190 degrees C in 40 min. In addition, the reusability of 4KSCC for fructose dehydration was fairly good. (C) 2020 Elsevier B.V. All rights reserved.
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