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题名: Ionothermal syntheses of transition-metal-substituted aluminophosphate molecular sieves in the presence of tetraalkylammonium hydroxides
作者: Li, Dawei1, 3;  Xu, Yunpeng1;  Ma, Huaijun1;  Xu, Renshun1;  Wang, Yasong1, 3;  Liu, Hao1, 3;  Wang, Bingchun1;  Tian, Zhijian1, 2
关键词: Ionothermal synthesis ;  Transition-metal-substituted aluminophosphate ;  Tetraalkylammonium hydroxides ;  Structure directing effect
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2015-07-01
DOI: 10.1016/j.micromeso.2015.02.028
卷: 210, 页:125-132
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: Transition-metal-substituted aluminophosphate (MeAPO) molecular sieves with SOD and AEI framework types have been synthesized ionothermally in the ionic liquid 1-ethyl-3-methylimidazolium bromide with adding four tetraalkylammonium hydroxides, including tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide and tetrabutylammonium hydroxide. Detailed synthetic investigation shows that the nature and concentration of the tetraalkylammonium hydroxide, the Me/Al ratio in the reaction mixture and the metal sources greatly influence the phase selectivity of the reaction. The products have been characterized by PXRD, SEM, ICP, CHN, UV-Vis spectroscopy, C-13, Al-27 and P-31 MAS NMR, and TG. The results reveal that the tetraalkylammonium cations compete with the ionic liquid cations to act as the structure directing agent. The templating ability of the tetraallcylammonium cations and the ionic liquid cations is closely related to their charge densities. (c) 2015 Elsevier Inc. All rights reserved.
关键词[WOS]: MICROPOROUS ALUMINOPHOSPHATE ;  DIRECTING AGENT ;  IONIC LIQUIDS ;  NMR ;  FRAMEWORK ;  MAGNESIUM ;  TEMPLATE ;  AMINES ;  ALPO4-18 ;  TOPOLOGY
语种: 英语
WOS记录号: WOS:000353733300017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146201
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 Catalysis, Dalian 116023, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Li, Dawei,Xu, Yunpeng,Ma, Huaijun,et al. Ionothermal syntheses of transition-metal-substituted aluminophosphate molecular sieves in the presence of tetraalkylammonium hydroxides[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2015,210:125-132.
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