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Zeolitic imidazolate framework ZIF-7 based molecular sieve membrane for hydrogen separation
Li, Yanshuo1,2,3; Liang, Fangyi1,2; Bux, Helge1,2; Yang, Weishen3; Caro, Juergen1,2; Li YS(李砚硕)
KeywordMetal-organic Frameworks Zeolitic Imidazolate Frameworks Molecular Sieve Membranes Zif-7 Gas Separation
Source PublicationJOURNAL OF MEMBRANE SCIENCE
2010-05-15
DOI10.1016/j.memsci.2010.02.074
Volume354Issue:1-2Pages:48-54
Indexed BySCI
SubtypeArticle
Department5
Funding Project504
Contribution Rank2;1
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
WOS SubjectEngineering, Chemical ; Polymer Science
WOS Research AreaEngineering ; Polymer Science
WOS KeywordMETAL-ORGANIC FRAMEWORK ; SILICA MEMBRANE ; GAS SEPARATION ; ALPHA-ALUMINA ; CARBON MEMBRANES ; HIGH-TEMPERATURE ; CU-3(BTC)(2) ; SELECTIVITY ; PERMEATION ; STABILITY
AbstractHydrogen-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.
Language英语
URL查看原文
WOS IDWOS:000277947600007
Citation statistics
Cited Times:291[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/103113
Collection中国科学院大连化学物理研究所
Corresponding AuthorLi YS(李砚硕)
Affiliation1.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
Recommended Citation
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,&李砚硕.(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.
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