Perfect recycle and mechanistic role of hydrogen sulfate ionic liquids as additive in ethanol for efficient conversion of carbohydrates into 5-ethoxymethylfurfural

被引：49
|
作者：
Guo, Haixin [1 ]
Duereh, Alif [3 ]
Hiraga, Yuya [3 ]
Aida, Taku M. [1 ]
Qi, Xinhua [2 ]
Smith, Richard Lee, Jr. [1 ,3 ]
机构：
[1] Tohoku Univ, Grad Sch Environm Studies, Aoba Ku, Aramaki Aza Aoba 6-6-11, Sendai, Miyagi 9808579, Japan
[2] Chinese Acad Agr Sci, Agroenvironm Protect Inst, 31 Fukang Rd, Tianjin 300191, Peoples R China
[3] Tohoku Univ, Res Ctr Supercrit Fluid Technol, Aoba Ku, Aramaki Aza Aoba 6-6-11, Sendai, Miyagi 9808579, Japan
来源：
CHEMICAL ENGINEERING JOURNAL | 2017年 / 323卷
关键词：
Biomass inulin; Biofuel; Reactivation; Reuse of homogeneous catalyst; Reaction mechanism; ACID CATALYST; SOLVENT SYSTEM; FRUCTOSE; GLUCOSE; CELLULOSE; BIOFUEL; INULIN; OIL; IMIDAZOLIUM; DEHYDRATION;
D O I：
10.1016/j.cej.2017.04.111
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Hydrogen sulfate ionic liquid as co-solvent and homogeneous catalyst can promote efficient conversion of carbohydrates into 5-ethoxymethylfurfural (5-EMF). Yields of 5-EMF were as high as 77% and 43% from inulin and sucrose, respectively, in the mixed solvent system of ethanol-[BMIM][HSO(4)1 for 30 min reaction time at 130 degrees C. The ionic liquid could be perfectly recycled with a single pretreatment of activated carbon for 24 h. Based on the characterization with H-1 NMR and ATR-FTIR, the mechanism for the hydrogen sulfate ionic liquid promoted conversion of inulin into 5-EMF through stabilization of 5-hydroxymethylfurfural (5-HMF) with the C-2 hydrogen of the ionic liquid. Hydrogen sulfate ionic liquid as additive allows efficient conversion of carbohydrates into biofuels and as homogeneous catalysts, they can be easily reactivated and recycled with activated carbon treatment. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：287 / 294
页数：8
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