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题名: Single isomerization selectivity of glucose in methanol over Sn-BEC zeolite of homogenous Sn distribution
作者: Zhang, Guanqun1, 4;  Feng, Pei2, 4;  Zhang, Weiping3;  Liu, Hao1;  Wang, Congxin1;  Ma, Huaijun1;  Wang, Donge1;  Tian, Zhijian1
关键词: Sn-zeolite ;  Germanosilicate ;  F-19 MAS NMR ;  Homogenous distribution ;  Glucose isomerization
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2017-07-15
DOI: 10.1016/j.micromeso.2017.03.052
卷: 247, 页:158-165
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 ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Sn-zeolites are important solid Lewis acid catalysts with wide applications to the conversions of various biomass-derived carbohydrates. As the catalytic center, framework Sn of Sn-zeolites can catalyze glucose isomerization to fructose and epimerization to mannose. In practical use, the main obstacle to the application of Sn-zeolites is the lengthy crystallization. In present work, we developed a rapid synthesis route to Sn-zeolites by incorporating Sn into the germanosilicate framework of BEC zeolite via direct hydrothermal procedure. The synthesis time required by Sn-BEC is tenfold shortened than that by the traditional Sn-zeolites like Sn-Beta. The locations of framework Sn atoms of Sn-BEC were investigated by F-19 MAS NMR and computational modeling, which indicates that the framework Sn sites of Sn-BEC adopt a uniquely homogenous distribution at the T-1 sites. Sn-BEC exhibits high reaction activity and single isomerization selectivity in the glucose conversion in methanol, while Sn-Beta shows both isomerization and epimerization selectivity. The single isomerization selectivity of Sn-BEC suggests the presence of single catalytic center, which is probably caused by the homogenous distribution of framework Sn sites. (C) 2017 Elsevier Inc. All rights reserved.
关键词[WOS]: BAEYER-VILLIGER OXIDATION ;  BETA-ZEOLITE ;  POLYMORPH-C ;  CATALYTIC-ACTIVITY ;  ACID ;  FRAMEWORK ;  ITQ-17 ;  SUGARS ;  GERMANIUM ;  ATOMS
语种: 英语
WOS记录号: WOS:000402947000019
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152195
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.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
3.Dalian Univ Technol, State Key Lab Fine Chem, 2 Linggong Rd, Dalian 116024, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Zhang, Guanqun,Feng, Pei,Zhang, Weiping,et al. Single isomerization selectivity of glucose in methanol over Sn-BEC zeolite of homogenous Sn distribution[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2017,247:158-165.
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