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学科主题: 物理化学
题名: Reaction media dominated product selectivity in the isomerization of glucose by chromium trichloride: From aqueous to non-aqueous systems
作者: Jia, Songyan1;  Liu, Kairui1, 2;  Xu, Zhanwei1;  Yan, Peifang1;  Xu, Wenjuan1;  Liu, Xiumei1;  Zhang, Z. Conrad1, 3
通讯作者: 张宗超
关键词: Glucose isomerization ;  Chromium trichloride ;  Fructose ;  General behavior ;  Aqueous media ;  Mixed solvents
刊名: CATALYSIS TODAY
发表日期: 2014-10-01
DOI: 10.1016/j.cattod.2014.02.038
卷: 234, 期:1, 页:83-90
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: While chromium trichloride hydrate (CrCl3 center dot 6H(2)O) effectively catalyzed the isomerization of glucose into fructose in aqueous solution, a general product selectivity behavior was observed independent of reaction variables such as reaction time, temperature, catalyst loading, halide ion, and initial glucose concentration. By studying the mixed solution of dimethylsulfoxide (DMSO) and water at varied DMSO/H2O ratios, it was found that deviation from the general water-phase fructose yield curve, with concomitant 5-hydroxymethylfurfral (HMF) formation, occurred when the fructose concentration in available water became sufficiently high in DMSO rich solvent mix. Therefore, tuning the solvent system was the most effective approach to change the product distribution from CrCl3 center dot 6H(2)O catalyzed glucose conversion. The apparent activation energy of glucose conversion in the studied system was estimated to be 58.6 kJ mol(-1). Special attention was also given to gain some mechanistic insights by control experiments with simple model compounds and additives, C-13 NMR and UV-vis spectroscopic analyses. (C) 2014 Elsevier B.V. All rights reserved.
关键词[WOS]: IONIC LIQUIDS ;  D-FRUCTOSE ;  EFFICIENT CONVERSION ;  CATALYTIC CONVERSION ;  DIMETHYL-SULFOXIDE ;  REDUCING SUGARS ;  ACID CATALYSTS ;  SOLID ACID ;  DEHYDRATION ;  WATER
语种: 英语
WOS记录号: WOS:000339132900010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/144074
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Jia, Songyan,Liu, Kairui,Xu, Zhanwei,et al. Reaction media dominated product selectivity in the isomerization of glucose by chromium trichloride: From aqueous to non-aqueous systems[J]. CATALYSIS TODAY,2014,234(1):83-90.
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