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题名: Ultrathin solid polymer electrolyte PEI/Pebax2533/AgBF4 composite membrane for propylene/propane separation
作者: Wang, Yanbei1;  Ren, Jizhong1;  Deng, Maicun1
关键词: Carrier-facilitated transport ;  Composite membrane ;  Solid polymer electrolyte membrane ;  Propylene/propane separation
刊名: SEPARATION AND PURIFICATION TECHNOLOGY
发表日期: 2011-02-02
DOI: 10.1016/j.seppur.2010.11.018
卷: 77, 期:1, 页:46-52
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: In this paper, a new solid polymer electrolyte PEI/Pebax2533/AgBF4 composite membrane (PEI: polyetherimide; Pebax2533: Polynylon12/tetramethylene oxide block copolymer. PA12-PTMO) is prepared with complexing method. When the external surface of Pebax2533 layer is immersed into AgBF4 solution, silver salt transfers into Pebax2533 layer according to the complexation with ether oxygens in Pebax2533 backbone, and an ultrathin solid polymer electrolyte layer is formed. When AgBF4 concentration is less than the threshold silver concentration C*(4.5 mol/L), because of low silver salt content in the solid polymer electrolyte layer, no carrier-facilitated transport phenomenon occurs. But for PEI/Pebax2533/AgBF4 composite membrane prepared with AgBF4 concentration above C*(4.5 mol/L), the percolation channels for carrier-facilitated transport are formed and the preferential adsorbed propylene molecules can transfer across the membrane easily, which result in an increase of propylene permeance and a sharp decrease of propane permeance. According to TEM observation, an ultrathin solid polymer electrolyte layer of 100-200 nm thickness exists in the external surface of the Pebax2533 layer of PEI/Pebax2533/AgBF4 composite membrane. (C) 2010 Elsevier B.V. All rights reserved.
关键词[WOS]: FACILITATED OLEFIN TRANSPORT ;  SILVER IONS ;  OLEFIN/PARAFFIN SEPARATION ;  POLYIMIDE MEMBRANES ;  ETHYLENE ;  CARRIER ;  SALTS
语种: 英语
WOS记录号: WOS:000287295900007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142317
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, Natl Engn Res Ctr Membrane Technol, Dalian 116023, Peoples R China

Recommended Citation:
Wang, Yanbei,Ren, Jizhong,Deng, Maicun. Ultrathin solid polymer electrolyte PEI/Pebax2533/AgBF4 composite membrane for propylene/propane separation[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2011,77(1):46-52.
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