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学科主题: 物理化学
题名: Zeolite-promoted hydrolysis of cellulose in ionic liquid, insight into the mutual behavior of zeolite, cellulose and ionic liquid
作者: Cai, Haile1, 2;  Li, Changzhi1;  Wang, Aiqin1;  Xu, Guoliang1;  Zhang, Tao1
通讯作者: 张涛
关键词: Cellulose ;  Zeolites ;  Ionic liquids ;  Hydrolysis ;  Glucose
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
发表日期: 2012-07-23
DOI: 10.1016/j.apcatb.2012.04.041
卷: 123, 期:123—124, 页:333-338
收录类别: SCI
文章类型: Article
部门归属: 15
项目归属: 1501
产权排名: 1,1
类目[WOS]: Chemistry, Physical ;  Engineering, Environmental ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: In this paper, a variety of H-type zeolites were demonstrated as efficient catalysts for hydrolysis of cellulose in ionic liquid (IL) to afford high yield of glucose under mild condition without a pretreatment process. By supplying water gradually as the reaction progresses. HY with the acid amount of 11.1 mol% promoted the highest glucose yield of 50.0% at 130 degrees C, and the yield of the three main products (glucose, cellobiose and 5-hydroxymethylfurfural) was up to 97.2%. It was found that the pore size, the acid amount, the water amount and the timing of water addition are critical factors for high hydrolysis efficiency. XRD characterization suggested that the framework structure of zeolite was particularly stable in 1-butyl-3-methylimidazolium chloride ([BMIm]Cl), while the cell parameter were enlarged due to the dilatation effect of [BMIm]Cl. Elemental analysis of the IL-treated HY demonstrated that IL entered the channel of HY. As such, part of the intra-channel space of HY was occupied, making the average pore diameter, pore volume and the BET surface area of IL-treated HY all decreased, which were demonstrated by physisorption characterization. FT-IR through pyridine adsorption showed that H+ cations generated in-situ from the Bronsted acid sites of zeolite were the key active species for the good hydrolysis performance, while the Lewis acid sites did not exhibit high activity. By simple calcination, the recovered HY showed excellent reusability. Finally, the proposed reaction pathway and recycle of the catalyst were presented. (C) 2012 Elsevier B.V. All rights reserved.
关键词[WOS]: ACID-CATALYZED HYDROLYSIS ;  GLUCOSE ;  BIOMASS ;  DEPOLYMERIZATION
语种: 英语
WOS记录号: WOS:000307159100037
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/118142
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, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Cai, Haile,Li, Changzhi,Wang, Aiqin,et al. Zeolite-promoted hydrolysis of cellulose in ionic liquid, insight into the mutual behavior of zeolite, cellulose and ionic liquid[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2012,123(123—124):333-338.
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