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题名: Synthesis of zeolite NaA membranes with high permeance under microwave radiation on mesoporous-layer-modified macroporous substrates for gas separation
作者: Chen, XB;  Yang, WS;  Liu, J;  Lin, LW
通讯作者: 杨维慎
关键词: inorganic membranes ;  gas separations ;  membrane preparation and structure ;  macroporous and mesoporous substrate ;  microwave heating
刊名: JOURNAL OF MEMBRANE SCIENCE
发表日期: 2005-06-15
DOI: 10.1016/j.memsci.2005.01.041
卷: 255, 期:1-2, 页:201-211
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: This article reported the NaA zeolite membranes with high permeance synthesized with microwave heating method under different conditions: (1) on a macroporous substrate in gel, (11) on a mesoporous/macroporous (top-mesoporous-layer-modified macroporous) substrate in gel, and (111) on a mesoporous/macroporous substrate in sol. In general, the H-2 permeance of the NaA membranes by microwave heating in gel was usually at the level of 10(-6) mol s(-1) m(-2) Pa-1, much higher than that by the conventional hydrothermal synthesis. At similar H-2/C3H8 permselectivity. On the substrate modified mesoporous top layer, the H-2 permeance of the NaA membranes by microwave heating in gel or sol was further enhanced, while maintaining comparable H-2/C3H8 permselectivity, due to the prevention of penetration of the reagent into the pores of the macroporous substrate. Meanwhile, the synthesis took less time in sol than in gel on the mesoporous/macroporous substrate. The NaA membranes synthesized in sol had larger permeance than those in gel and underwent transformation in shorter time. The permeation of C3H8 suggested that there existed unwanted intercrystalline pores or defects in the membranes. © 2005 Elsevier B.V. All rights reserved.
关键词[WOS]: PERMEATION PROPERTIES ;  COMPOSITE MEMBRANES ;  LIQUID-MIXTURES ;  PERVAPORATION ;  GROWTH
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000229517500021
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/92365
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

Recommended Citation:
Chen, XB,Yang, WS,Liu, J,et al. Synthesis of zeolite NaA membranes with high permeance under microwave radiation on mesoporous-layer-modified macroporous substrates for gas separation[J]. JOURNAL OF MEMBRANE SCIENCE,2005,255(1-2):201-211.
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