Discrimination of Small Gas Molecules through Adsorption: Reverse Selectivity for Hydrogen in a Flexible Metal-Organic Framework

被引：51

作者：

Chun, Hyungphil ^{[1
]}

Seo, Jinwoo ^{[1
]}

机构：

[1] Hanyang Univ, Coll Sci & Technol, Dept Appl Chem, Ansan 426791, South Korea

来源：

INORGANIC CHEMISTRY | 2009年 / 48卷 / 21期

关键词：

POROUS COORDINATION-POLYMER; CARBON-DIOXIDE; CO2; NETWORKS; CONSTRUCTION; CHANNELS; SORPTION; STORAGE; SURFACE; SOLIDS;

D O I：

10.1021/ic901456k

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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.

引用

页码：9980 / 9982

页数：3

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