ChemSusChem p. 1063 - 1069 (2013)
Update date:2022-08-24
Topics:
Huang, Zhen
Pan, Wenya
Zhou, Haibo
Qin, Feng
Xu, Hualong
Shen, Wei
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. Valuable sugars: Nafion-resin-functionalized mesocellular silica foam (MCF) is a strong solid acid that can be prepared through an impregnation method. By using this method, Nafion is well-dispersed in the ultra-large cells of MCFs. This material can easily be reused and exhibits high efficiency and selectivity for the acid-catalyzed dehydration of D-fructose to 5-hydroxymethylfurfural under mild conditions. Copyright
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