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题名: Catalytic Conversion of Concentrated Glucose to Ethylene Glycol with Semicontinuous Reaction System
作者: Zhao, Guanhong1, 2;  Zheng, Mingyuan1;  Zhang, Junying1, 2;  Wang, Aiqin1;  Zhang, Tao1
刊名: INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
发表日期: 2013-07-17
DOI: 10.1021/ie400989a
卷: 52, 期:28, 页:9566-9572
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: Catalytic conversion of biomass to bulk valuable chemicals is of great significance for humanity, alleviating the dependence on fossil energy resources. Herein, the catalytic conversion of concentrated glucose to ethylene glycol (EG) was studied with dual-functional catalysts in a semicontinuous reaction system. Among a variety of tungsten-based catalysts, AMT-Ru/AC gave the highest EG yield of 60.0% as the mole ratio of W to Ru active sites was in an optimal range of 5-8. Higher temperatures (over 200 degrees C) and lower concentration of reactant are beneficial to the EG production. The reaction kinetic study disclosed that the reaction selectivity dependent on temperature should be attributed to the big discrepancy in the activation energies between glycol aldehyde (GA, precursor of EG) and EG formation, while the selectivity sensitive to feedstock concentration should be primarily due to the GA side reactions which follow a higher order kinetics (pseudo second order) than the GA hydrogenation to EG (first order). The semicontinuous reaction system well controlled the reactants at low concentrations by a differential effect on the feedstock but realized the product concentration integral to the proceeding of the reaction. In this way, EG was effectively produced from concentrated glucose with high selectivity. Also, this reaction system was found to be suitable for the catalytic conversion of fructose to EG and propylene glycol. The present work provided a valuable strategy for the catalytic conversion of active biomass such as glucose and fructose to glycols, particularly for their practical applications on a large scale.
关键词[WOS]: TUNGSTEN CARBIDE CATALYSTS ;  CELLULOSE CONVERSION ;  BIMETALLIC CATALYSTS ;  RUTHENIUM CATALYSTS ;  HYDROGENATION ;  BIOMASS ;  ALKANES ;  FUELS ;  WATER ;  NI
语种: 英语
WOS记录号: WOS:000322103400009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137809
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, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Zhao, Guanhong,Zheng, Mingyuan,Zhang, Junying,et al. Catalytic Conversion of Concentrated Glucose to Ethylene Glycol with Semicontinuous Reaction System[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2013,52(28):9566-9572.
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