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题名: Poly (amide-6-b-ethylene oxide) multilayer composite membrane for carbon dioxide separation
作者: Ren, Xiaoling1;  Ren, Jizhong1;  Li, Hui1;  Feng, Shichao1;  Deng, Maicun1
关键词: Poly (amide-6-b-ethylene oxide) ;  Multilayer composite membrane ;  Carbon dioxide separation ;  Transport
刊名: INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
发表日期: 2012-05-01
DOI: 10.1016/j.ijggc.2012.01.017
卷: 8, 页:111-120
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Energy & Fuels ;  Engineering, Environmental
研究领域[WOS]: Energy & Fuels ;  Engineering
英文摘要: In this paper, block copolymer poly (amide-6-b-ethylene oxide) Pebax (R) MH 1657 (PEBA1657) is used to prepare multilayer polyetherimide (PEI)/polydimethylsilicone (PDMS)/PEBA1657/PDMS composite membranes according to dip-coating method. The PDMS gutter layer is mainly used for preventing the pore penetration of PEBA1657 solution and the PDMS protective layer for sealing the defects of PEBA1657 selective layer. The prepared multilayer PEI/PDMS/PEBA1657/PDMS composite membranes display high permeance and high selectivity for CO2 separation. For the nonpolar gases He, H-2, O-2 and N-2, the gas permeance decreases with the increasing molecule size. But for the polar gases CO2, H2S and SO2, their permeance is higher than that of nonpolar gases. Due to CO2 induced plasticization effect, the pressure dependence of CO2 permeance is expressed empirically by an exponential equation. And the temperature dependence of gas permeance is correlated with different Arrhenius equation below and above the melting of PEO segments. Compared with N-2, H-2 and CH4, CO2 has lower value of the apparent activation energy of permeation (E-p) because of its higher inherent condensability and the special interaction with polymer chain. Due to CO2 induced plasticization effect, the diffusion activation energy (E-d) of CO2 decreases with the increase of CO2 pressure, resulting in the decrease of E-p. As for CO2/N-2 gas mixture, the pressure ratio strongly influences the CO2 concentration in the permeate side, and a high pressure ratio is always desirable to obtain high CO2 concentration for flue gas. (C) 2012 Elsevier Ltd. All rights reserved.
关键词[WOS]: HOLLOW-FIBER MEMBRANES ;  BLOCK AMIDE) MEMBRANES ;  GAS SEPARATION ;  CO2 SEPARATION ;  FACILITATED TRANSPORT ;  POLY(ETHYLENE OXIDE) ;  POLYMERIC MEMBRANES ;  RESISTANCE MODEL ;  PERMEATION ;  CAPTURE
语种: 英语
WOS记录号: WOS:000303970600012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138001
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:
Ren, Xiaoling,Ren, Jizhong,Li, Hui,et al. Poly (amide-6-b-ethylene oxide) multilayer composite membrane for carbon dioxide separation[J]. INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL,2012,8:111-120.
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