Zeolitic imidazolate framework ZIF-7 based molecular sieve membrane for hydrogen separation

	Zeolitic imidazolate framework ZIF-7 based molecular sieve membrane for hydrogen separation
	Li, Yanshuo 1,2,3; Liang, Fangyi 1,2; Bux, Helge 1,2; Yang, Weishen 3; Caro, Juergen 1,2
刊名	journal of membrane science
	2010-05-15
卷号	354 期号:1-2 页码:48-54
关键词	Metal-organic frameworks Zeolitic imidazolate frameworks Molecular sieve membranes ZIF-7 Gas separation
通讯作者	李砚硕
产权排序	2;1
英文摘要	hydrogen-based energy system could address issues related to global climate change, energy security, and local air pollution. thermally and hydrothermally stable microporous membranes with intrinsic high h(2)/co(2) selectivity are highly demanded. a novel zeolitic imidazolate framework (zif-7) membrane was tested for its gas separation performance. zifs are microporous materials and belong to the new class of metal-organic frameworks (mofs). zif-7 is formed by bridging benzimidazolate anions and zinc cations resulting in a sodalite (sod) topology with a pore size of about 0.3 nm. the zif-7 membrane exhibited promising h(2) separation abilities. at 220 degrees c, the h(2) permeance is similar to 4.5 x 10(-8) mol m(-2) s(-1) pa(-1) and the mixture separation factors for h(2)/co(2), h(2)/n(2), and h(2)/ch(4) are 13.6, 18.0, and 14.0, respectively. as a result of molecular sieving mechanism, the ideal selectivities and mixture separation factors are identical. the permeation of h(2) through the zif-7 membrane is highly activated with an apparent activation energy of 11.9 kj mol(-1). due to the ultra-hydrophobic properties of zif materials, the zif-7 membrane also showed excellent hydrothermal stability in the presence of steam. our results clearly demonstrate that zif-7 membranes have an intrinsic high h(2)/co(2) selectivity and a promising application in hydrogen separation, which is based on its very narrow and well-defined crystal pore structure. (c) 2010 elsevier b.v. all rights reserved.
WOS标题词	science & technology ; technology ; physical sciences
类目[WOS]	engineering, chemical ; polymer science
研究领域[WOS]	engineering ; polymer science
关键词[WOS]	metal-organic framework ; silica membrane ; gas separation ; alpha-alumina ; carbon membranes ; high-temperature ; cu-3(btc)(2) ; selectivity ; permeation ; stability
收录类别	SCI
原文出处	false
语种	英语
WOS记录号	WOS:000277947600007
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/103113]
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, Ctr Solid State Res & New Mat, Inst Phys Chem & Electrochem, D-30167 Hannover, Germany 2.Leibniz Univ Hannover, Ctr Solid State Res & New Mat, LNQE, D-30167 Hannover, Germany 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Li, Yanshuo,Liang, Fangyi,Bux, Helge,et al. Zeolitic imidazolate framework ZIF-7 based molecular sieve membrane for hydrogen separation[J]. journal of membrane science,2010,354(1-2):48-54.
APA	Li, Yanshuo,Liang, Fangyi,Bux, Helge,Yang, Weishen,&Caro, Juergen.(2010).Zeolitic imidazolate framework ZIF-7 based molecular sieve membrane for hydrogen separation.journal of membrane science,354(1-2),48-54.
MLA	Li, Yanshuo,et al."Zeolitic imidazolate framework ZIF-7 based molecular sieve membrane for hydrogen separation".journal of membrane science 354.1-2(2010):48-54.