Highly selective sieving of small gas molecules by using an ultra-microporous metal–organic framework membrane

Zixi Kang, Ming Xue, Lili Fan, Lin Huang, Lijia Guo, Guoying Wei, Banglin Chen, Shilun Qiu

Research output: Contribution to journalArticlepeer-review

93 Scopus citations

Abstract

© 2014 The Royal Society of Chemistry. Two tailor-made microporous metal-organic framework (MOF) membranes were successfully fabricated on nickel screens by secondary growth. The effect of pore structures on gas separation was examined by means of single and binary gas permeation tests. The MOF JUC-150 membrane with its ultra-micropores showed marked preferential permeance to H2 relative to other gas molecules. The selectivity factors of this membrane were 26.3, 17.1 and 38.7 for H2/CH4, H2/N2 and H2/CO2, respectively, at room temperature. To the best of our knowledge, these values represent unprecedentedly high separation selectivity among those for all MOF membranes reported to date. The JUC-150 membrane also shows high thermal stability and outstanding separation performance at a high temperature of 200 °C. The separation performance of these membranes persists even after more than 1 year exposure to air. The superiority of the tailored pore size, high selectivity for H2 over other gases, significant stability and recyclability make these materials potential candidates for industrial H2 recycling applications.
Original languageEnglish (US)
Pages (from-to)4053-4060
Number of pages8
JournalEnergy Environ. Sci.
Volume7
Issue number12
DOIs
StatePublished - Sep 12 2014
Externally publishedYes

Fingerprint Dive into the research topics of 'Highly selective sieving of small gas molecules by using an ultra-microporous metal–organic framework membrane'. Together they form a unique fingerprint.

Cite this