Publication Date:
2014-07-06
Description:
Molecular sieving metal-organic framework (MOF) membranes have great potential for energy-efficient chemical separations, but a major hurdle is the lack of a scalable and inexpensive membrane fabrication mechanism. We describe a route for processing MOF membranes in polymeric hollow fibers, combining a two-solvent interfacial approach for positional control over membrane formation (at inner and outer surfaces, or in the bulk, of the fibers), a microfluidic approach to replenishment or recycling of reactants, and an in situ module for membrane fabrication and permeation. We fabricated continuous molecular sieving ZIF-8 membranes in single and multiple poly(amide-imide) hollow fibers, with H2/C3H8 and C3H6/C3H8 separation factors as high as 370 and 12, respectively. We also demonstrate positional control of the ZIF-8 films and characterize the contributions of membrane defects and lumen bypass.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brown, Andrew J -- Brunelli, Nicholas A -- Eum, Kiwon -- Rashidi, Fereshteh -- Johnson, J R -- Koros, William J -- Jones, Christopher W -- Nair, Sankar -- New York, N.Y. -- Science. 2014 Jul 4;345(6192):72-5. doi: 10.1126/science.1251181.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA. ; School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA. Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA. ; School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA. ; School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA. School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA. sankar.nair@chbe.gatech.edu christopher.jones@chbe.gatech.edu. ; School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA. sankar.nair@chbe.gatech.edu christopher.jones@chbe.gatech.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24994649" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
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Chemistry and Pharmacology
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Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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