Efficient conversion of fructose into 5-ethoxymethylfurfural with hydrogen sulfate ionic liquids as co-solvent and catalyst

文献类型： 外文期刊

第一作者： Guo, Haixin

作者： Guo, Haixin;Aida, Taku M.;Smith, Richard Lee, Jr.;Qi, Xinhua;Hiraga, Yuya;Smith, Richard Lee, Jr.

作者机构：

关键词： Biomass conversion;Biofuel;5-EMF;Hydrogen bond;Etherification

期刊名称：CHEMICAL ENGINEERING JOURNAL （ 影响因子：13.273； 五年影响因子：11.529 ）

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收录情况： SCI

摘要： Hydrogen sulfate ionic liquid as co-solvent and as homogeneous catalyst in ethanol solvent allows efficient conversion of fructose into 5-ethoxymethylfurfural (5-EMF) directly at mild conditions. Ionic liquids [A][B] ([A](+) = 1-methylimidazolium, [C(1)im](+); 1-ethyl-3-methylimidazolium, [C(2)mim](+); or 1-butyl-3methylimidazolium, [C(4)mim](+), [B](-) = hydrogen sulfate, [HSO4](-); acetate, [AC](-); diethylphosphate, [DEIT](-)); dimethylphosphate, [DMP](-)) or chloride, [Cl](-) were studied. In the [C(4)mim][HSO4]-ethanol system, 83% 5-EMF yields were obtained from fructose at 130 degrees C in 20 min reaction time that can be attributed to the anion acidity and to a stabilizing hydrogen bond that forms between the ionic liquid and 5-HMF. The ionic liquid was demonstrated to be reusable for five times with minimal loss in catalytic activity (ca. 3% loss in 5-EMF yield). Hydrogen sulfate ionic liquids as co-solvent and catalyst in ethanol allow efficient conversion of biomass-related mixtures that contain fructose or a 5-HMF intermediate into biofuels.(C) 2016 Elsevier B.V. All rights reserved.

分类号： TQ

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