Comparative permeation studies on three supported membranes: Pure ZIF-8, pure polymethylphenylsiloxane, and mixed matrix membranes

	Comparative permeation studies on three supported membranes: Pure ZIF-8, pure polymethylphenylsiloxane, and mixed matrix membranes
	Diestel, L.1; Liu, X. L.2; Li, Y. S.2; Yang, W. S.2; Caro, J.1
刊名	microporous and mesoporous materials
	2014-05-01
卷号	189 页码:210-215
关键词	Permeation ZIF-8 membrane PMPS membrane Mixed matrix membrane Increased free volume
英文摘要	we studied the separation of four practice-relevant gas mixtures on three different membranes which were prepared on porous alumina supports: (i) a pure zif-8 (zeolitic imidazolate framework), (ii) a pure pmps (polymethylphenylsiloxane) polymer, and (iii) a mixed matrix membrane (mmm, with 8.3 wt.% approximate to 8.8 vol.% zif-8 (density 0.93 g cm(-3)) in pmps (density 1.00 g cm(-3))). the four gas mixtures under study were: co2/ch4, co2/n-2, h-2/co2, and o-2/n-2. whereas the pure zif-8 membrane shows the best separation factor alpha = 11 for h-2/ch4, the pure pmps membrane has higher separation factors for the co2 separation from other gases. it was anticipated that the separation behavior of the mmm results from an interplay of the permeation through the pmps polymer matrix and the embedded zif-8 nanocrystals. actually, the separation factors of the mmm were found to be equal to the separation factors of the pure polymer membrane. however, we measured much higher gas fluxes through the mmm than through the pure polymer membrane. this experimental finding could indicate an increase of the free volume of the pmps polymer after introduction of zif-8 nanoparticles. (c) 2013 elsevier inc. all rights reserved.
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
关键词[WOS]	zeolitic imidazolate framework ; metal-organic framework ; molecular-sieve membrane ; gas separation membranes ; hydrogen selectivity ; polymeric membranes ; nanocomposite membranes ; co2/ch4 separation ; high permeability ; block-copolymers
收录类别	SCI ; ISTP
语种	英语
WOS记录号	WOS:000333853200024
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/145415]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Leibniz Univ Hannover, Inst Phys Chem & Elect, Hannover, Germany 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian, Peoples R China
推荐引用方式 GB/T 7714	Diestel, L.,Liu, X. L.,Li, Y. S.,et al. Comparative permeation studies on three supported membranes: Pure ZIF-8, pure polymethylphenylsiloxane, and mixed matrix membranes[J]. microporous and mesoporous materials,2014,189:210-215.
APA	Diestel, L.,Liu, X. L.,Li, Y. S.,Yang, W. S.,&Caro, J..(2014).Comparative permeation studies on three supported membranes: Pure ZIF-8, pure polymethylphenylsiloxane, and mixed matrix membranes.microporous and mesoporous materials,189,210-215.
MLA	Diestel, L.,et al."Comparative permeation studies on three supported membranes: Pure ZIF-8, pure polymethylphenylsiloxane, and mixed matrix membranes".microporous and mesoporous materials 189(2014):210-215.