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题名: Ionothermal synthesis of gallophosphate molecular sieves in 1-alkyl-3-methyl imidazolium bromide ionic liquids
作者: Ma, Huaijun1, 2;  Xu, Renshun1, 2;  You, Wansheng3;  Wen, Guodong1, 2;  Wang, Shaojun4;  Xu, Yan3;  Wang, Bingchun1, 2;  Wang, Lei1;  Wei, Ying1, 2;  Xu, Yunpeng1;  Zhang, Weiping1;  Tian, Zhijian1;  Lin, Liwu1
通讯作者: 田志坚
关键词: Ionothermal synthesis ;  Ionic liquid ;  Molecular sieve ;  Gallophosphate ;  Single crystal
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2009-04-15
DOI: 10.1016/j.micromeso.2008.11.018
卷: 120, 期:3, 页:278-284
收录类别: SCI
文章类型: Article
部门归属: 8
项目归属: 802
产权排名: 1;1
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: Gallophosphate (GaPO4) molecular sieves were ionothermally prepared in 1-alkyl-3-methyl imidazolium bromide ionic liquids (ILs) with alkyl chain length varying from 2 to 6 carbons for the first time. Three kinds of GaPO4 materials such as GaPO4-a, cloverite (denoted as CLO below) and GaPO4-LTA were obtained, and their structures and morphologies were characterized by powder and single crystal XRD, SEM and multi-nuclear NMR. In the case of 1-ethyl-3-methyl imidazolium bromide ionic liquid, large single crystals Of GaPO4-LTA with well-defined octahedral morphology was obtained in both sealed (ca. 400 mu m in size) and open vessels (ca. 300 mu m in size). Ionothermal synthesis is an effective method for the preparation of large single crystal of molecular sieves. With the alkyl chain length of the ionic liquids increasing from 2 carbons to 6 carbons, the size Of GaPO4-LTA decreased sharply. The organic template cations in the as-synthesized GaPO4-LTA crystals may have two different kinds of conformational structures. Fluorine plays a role of co-template along with organic cations of ILs in the synthesis Of GaPO4-LTA and CLO, while only GaPO4-a was obtained in the absence of fluorine. The reaction temperature can also affect the structure of the final structure. In the reaction medium of 1-ethyl-3-methyl imidazolium bromide IL, GaPO4-LTA was obtained at 180 degrees C, while CLO was obtained at 150 degrees C. Crown Copyright (C) 2008 Published by Elsevier Inc. All rights reserved.
关键词[WOS]: METAL-ORGANIC FRAMEWORKS ;  X-RAY CHARACTERIZATION ;  ALCOHOLIC SYSTEM ;  POROUS MATERIALS ;  FLUORIDE ROUTE ;  ZEOLITE ;  TEMPLATE ;  SOLVENTS ;  CLOVERITE ;  CRYSTALS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000264971200014
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/102135
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 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Liaoning Normal Univ, Inst Chem Functionalized Mat, Dalian 116029, Peoples R China
4.Dalian Polytech Univ, Dept Chem Engn, Dalian 116034, Peoples R China

Recommended Citation:
Ma, Huaijun,Xu, Renshun,You, Wansheng,et al. Ionothermal synthesis of gallophosphate molecular sieves in 1-alkyl-3-methyl imidazolium bromide ionic liquids[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2009,120(3):278-284.
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