期刊
CHEMSUSCHEM
卷 6, 期 6, 页码 1063-1069出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201200967
关键词
dehydration; heterogeneous catalysis; mesoporous materials; nafion; silica foams
资金
- STCSM [08DZ2270500, 09DZ2271500]
Catalytic dehydration of D-fructose to 5-hydroxymethylfurfural (HMF) was investigated over a series of Nafion-modified mesocellular silica foam (MCF) materials. By using an impregnation method, Nafion resin was highly dispersed in the ultra-large pores of the MCFs. Highly efficient and selective dehydration of D-fructose to HMF was achieved in dimethyl sulfoxide solvent; an 89.3% HMF yield with 95.0% selectivity was obtained in the presence of the Nafion(15)/MCF catalyst. The effects of reaction temperature, reaction time, and solvent on the dehydration of D-fructose were systematically investigated. The catalyst could be regenerated through an ion-exchange method and a high yield was retained after being used five times. As a heterogeneous catalytic process, a possible reaction mechanism for the dehydration of D-fructose over Nafion-modified MCF catalysts was proposed.
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