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Discrimination of Small Gas Molecules through Adsorption: Reverse Selectivity for Hydrogen in a Flexible Metal-Organic Framework
- Authors
- Chun, Hyungphil; Seo, Jinwoo
- Issue Date
- Nov-2009
- Publisher
- American Chemical Society
- Keywords
- STORAGE; POROUS COORDINATION-POLYMER; CO2; CONSTRUCTION; SORPTION; SOLIDS; SURFACE; NETWORKS; CHANNELS; CARBON-DIOXIDE
- Citation
- Inorganic Chemistry, v.48, no.21, pp.9980 - 9982
- Indexed
- SCIE
SCOPUS
- Journal Title
- Inorganic Chemistry
- Volume
- 48
- Number
- 21
- Start Page
- 9980
- End Page
- 9982
- ISSN
- 0020-1669
- Abstract
- Zn2+ ions react with 3,5-pyridinedicarboxylate (pydc) to form a new metal-organic framework (MOF), [Zn(pydc)(dma)] (dma = N,N'-dimethylacetamide), based on a non interpenetrating (10,3)-a topology. The framework possessing narrow one-dimensional channels is highly flexible, and as a result,- guest-dependent breakthrough-like adsorptions occur under atmospheric pressure. This "gate opening" requires strong interactions between gas molecules and the adsorbent, and therefore [Zn(pydc)(dma)] shows a reverse selectivity for H-2 at 77 K, which is very unusual in MOFs. At 195 K, only CO2 is selectively adsorbed by this material because of the temperature dependence of the gated adsorption.
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Related Researcher
- Chun, Hyungphil
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY (DEPARTMENT OF CHEMICAL AND MOLECULAR ENGINEERING)