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题名: Controlled synthesis of high performance carbon/zeolite T composite membrane materials for gas separation
作者: Liu, Qingling1;  Wang, Tonghua1;  Guo, Hongchen2;  Liang, Changhai1;  Liu, Shili1;  Zhang, Zhiguo2;  Cao, Yiming3;  Su, Dang Sheng4;  Qiu, Jieshan1
关键词: Carbon ;  Zeolite ;  Polyimide ;  Composite membrane ;  Gas separation
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2009-04-15
DOI: 10.1016/j.micromeso.2008.12.029
卷: 120, 期:3, 页:460-466
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 simple approach has been developed to synthesize the carbon/zeolite T composite membrane materials with the high gas separation performance. The precursors of the composite membrane are composed of polyimide matrix and dispersed zeolite T particles. The composite membranes prepared by pyrolysis at 973 K show excellent gas (H(2), CO(2), O(2), N(2), and CH(4)) permeability and selectivity (O(2)/N(2), CO(2)/CH(4)) for both single gas and mixed-gas. The gas separation performance of the composite membranes can be controlled in a wide range by only changing the zeolite T particle size. The maximum selectivity of O(2) over N(2) (21/79 mol%) for the composite membranes with the least zeolite T particle (0.5 mu m) is 15 with an O(2) permeability of 347 Barters (1 Barrer = 7.5 x 10(-18) m(2) s(-1) Pa(-1)) and the selectivity of CO(2) over CH(4) (50/50 mol%) reaches a value of 179 with a CO(2) permeability of 1532 Barters. It is believed that the increase of gas permeability is attributed to the ordered microchannels in the zeolite and the interfacial gaps formed between zeolite and carbon matrix in the composite membranes. And the gas selectivity is tuned by the size of interfacial gaps which are varied with the zeolite particle size. This technique will provide a simple and convenient route to efficiently improve the trade-off relationship between the permeability and the selectivity and enable the construction of carbon-based composite materials with novel functionalities in membrane science. (C) 2009 Elsevier Inc. All rights reserved.
关键词[WOS]: MOLECULAR-SIEVE MEMBRANES ;  NANOPOROUS CARBON MEMBRANES ;  POLYIMIDE MEMBRANES ;  TRANSPORT-PROPERTIES ;  PHENOLIC RESIN ;  AIR SEPARATION ;  ZEOLITE ;  SILICA ;  PYROLYSIS ;  PLASTICIZATION
语种: 英语
WOS记录号: WOS:000264971200040
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141573
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.Dalian Univ Technol, Sch Chem Engn, Dept Mat Sci & Chem Engn, State Key Lab Fine Chem,Carbon Res Lab, Dalian 116012, Peoples R China
2.Dalian Univ Technol, Sch Chem Engn, Dept Catalysis Chem & Engn, Dalian 116012, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
4.Max Planck Soc, Fritz Haber Inst, Dept Inorgan Chem, D-14195 Berlin, Germany

Recommended Citation:
Liu, Qingling,Wang, Tonghua,Guo, Hongchen,et al. Controlled synthesis of high performance carbon/zeolite T composite membrane materials for gas separation[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2009,120(3):460-466.
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