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题名: Hydrothermal stability of LTA zeolite membranes in pervaporation
作者: Li, Yanshuo;  Zhou, Han;  Zhu, Guangqi;  Liu, Jie;  Yang, Weishen
通讯作者: 杨维慎
关键词: LTA ;  zeolite membrane ;  stability ;  pervaporation ;  dehydration
刊名: JOURNAL OF MEMBRANE SCIENCE
发表日期: 2007-07-05
DOI: 10.1016/j.memsci.2007.03.041
卷: 297, 期:1-2, 页:10-15
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 504
产权排名: 1;1
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Engineering, Chemical ;  Polymer Science
研究领域[WOS]: Engineering ;  Polymer Science
英文摘要: Aiming at the application in pervaporation dehydration process, the hydrothermal stability of LTA zeolite membranes in pervaporation was investigated. Although our LTA zeolite membranes possessed excellent long-term stability in vapor permeation, they failed in pervaporation at high water concentration. The changes of morphology and asymmetric stretching vibrations of TO4 (T = Si or Al) of the LTA zeolite membranes after stability test were detected by SEM and FrIR/ATR, respectively. XRD characterization was performed to detect the changes of diffraction intensity of the LTA zeolite membranes. It was found that the damage of LTA zeolite membrane by water mainly occurred in the grain boundary regions. The amorphous-like structure of the grain boundary is probably the principal cause of the low hydrothermal stability of LTA zeolite membrane at high water concentration. (c) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: NAA MEMBRANE ;  CERAMIC MEMBRANES ;  FTIR-ATR ;  SEPARATION ;  WATER ;  ACID
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000247389100003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/99607
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 100864, Peoples R China

Recommended Citation:
Li, Yanshuo,Zhou, Han,Zhu, Guangqi,et al. Hydrothermal stability of LTA zeolite membranes in pervaporation[J]. JOURNAL OF MEMBRANE SCIENCE,2007,297(1-2):10-15.
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