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题名: Ionothermal synthesis of a CHA-type aluminophosphate molecular sieve membrane and its formation mechanism
作者: Li, Xiaolei1, 2;  Li, Keda1;  Ma, Huaijun1;  Xu, Renshun1;  Tao, Shuo1, 2;  Tian, Zhijian1, 3
关键词: Aluminophosphate ;  Ionothermal synthesis ;  CHA membrane ;  Formation mechanism ;  Solid transformation
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2015-11-15
DOI: 10.1016/j.micromeso.2015.06.005
卷: 217, 页:54-62
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: A gas permeable CHA-type aluminophosphate molecular sieve membrane was ionothermally synthesized on a porous delta-alumina substrate through the so-called "substrate surface conversion" method. The synthetic conditions for this specific membrane were optimized. The temperature, time and the amounts of H3PO4 and HF in the initial synthesis solution were investigated. X-ray diffraction (XRD), scanning electron microscopy (SEM) and gas permeation were performed to characterize the entire formation process for the CHA-type molecular sieve membrane. A formation mechanism of the "substrate surface conversion" method was proposed. The transformation of the gel layer to the CHA membrane via a solid transformation mechanism was suggested. (C) 2015 Elsevier Inc. All rights reserved.
关键词[WOS]: PHASE TRANSPORT METHOD ;  SAPO-34 MEMBRANES ;  IONIC LIQUIDS ;  CRYSTALLIZATION MECHANISM ;  COMPOSITE MEMBRANES ;  ZEOLITE ;  SEPARATION ;  FILMS ;  ORIENTATION ;  PERFORMANCE
语种: 英语
WOS记录号: WOS:000360596100008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146505
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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Li, Xiaolei,Li, Keda,Ma, Huaijun,et al. Ionothermal synthesis of a CHA-type aluminophosphate molecular sieve membrane and its formation mechanism[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2015,217:54-62.
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