Hysteretic Gas Sorption in a Microporous Metal–Organic Framework with Nonintersecting 3D Channels
Hysteretic Gas Sorption in a Microporous Metal–Organic Framework with Nonintersecting 3D Channels
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DOI：
10.1002/ejic.200900733
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发表时间：
2009-11
影响因子：
2.3
通讯作者：
Jin-soo Seo;Hyungphil Chun
中科院分区：
文献类型：
--
作者：
Jin-soo Seo;Hyungphil Chun
合成了一种由金属离子和角形二羧酸配体组成的永久多孔金属有机骨架材料，并对其独特的气体吸附性能进行了表征。Zn 2+离子与2，7-ndcH 2（2，7-naphthalenedicarboxylic acid）反应生成双壁骨架[Zn（2，7-ndc）]。多孔MOF在三个垂直方向上具有狭窄的通道。使用Ar，CO2，H2，N2和O2在不同温度下的气体吸附研究表明，饱和等温线显示出阶梯式吸附和滞后回线，这是微孔材料非常不寻常的功能。微孔MOF的意外气体吸附行为是由于孔通道的独特布置及其与吸附气体的临界尺寸相当的狭窄通道。（© Wiley-VCH Verlag GmbH & Co. KGaA，69451魏因海姆，德国，2010）
A permanently porous metal–organic framework (MOF) based on infinite chains of metal ions and angular dicarboxylate ligands was synthesized, and its unusual gas sorption properties were characterized. Zn2+ ions react with 2,7-ndcH2 (2,7-naphthalenedicarboxylic acid) to produce a double-walled framework, [Zn(2,7-ndc)]. The porous MOF possesses narrow channels in three perpendicular directions. Gas sorption studies using Ar, CO2, H2, N2, and O2 at various temperatures reveal that saturation isotherms show a stepwise adsorption and hysteresis loops that are highly unusual features for microporous materials. The unexpected gas sorption behavior of the microporous MOF is due to the unique arrangement of the pore channels and their narrow passages comparable to the critical dimensions of adsorptive gases. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2010)