具有高CO吸附性能的极性酮功能化金属有机框架
Polar Ketone-Functionalized Metal-Organic Framework Showing a High CO Adsorption Performance.
作者信息
Feng Genfeng, Peng Yuxin, Liu Wei, Chang Feifan, Dai Yafei, Huang Wei
机构信息
State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing, Jiangsu Province 210093, P. R. China.
School of Physics Science & Technology and Jiangsu Key Laboratory for NSLSCS, Nanjing Normal University , Nanjing, Jiangsu Province 210023, P. R. China.
出版信息
Inorg Chem. 2017 Mar 6;56(5):2363-2366. doi: 10.1021/acs.inorgchem.6b02660. Epub 2017 Feb 20.
The incorporation of various functionalities into porous metal-organic frameworks (MOFs) represents an efficacious strategy to improving their gas adsorption properties. In this work, a carbonylated tetracarboxylic acid ligand (5,5'-carbonyldiisophthalic acid) was synthesized, and a ketone-functionalized MOF with exposed metal sites based on this ligand was formed successfully. Structural analysis reveals that the new MOF possesses channels decorated by the carbonyl groups and rhombicuboctahedral cages, with open Cu sites pointing toward the cage center. The framework exhibits exceptionally high CO (46.7 wt % at 273 K and 1 bar) and H (2.8 wt % at 77 K and 1 bar) uptake. Furthermore, it displays high selectivities of CO adsorption over N and CH at 298 K.
将各种功能基团引入多孔金属有机框架（MOF）是提高其气体吸附性能的有效策略。在这项工作中，合成了一种羰基化四羧酸配体（5,5'-羰基二间苯二甲酸），并成功制备了基于该配体的具有暴露金属位点的酮功能化MOF。结构分析表明，新型MOF具有由羰基修饰的通道和菱形立方八面体笼，开放的铜位点指向笼中心。该框架表现出极高的CO吸附量（273 K和1 bar下为46.7 wt%）和H吸附量（77 K和1 bar下为2.8 wt%）。此外，在298 K时，它对CO吸附相对于N和CH表现出高选择性。
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