化学
超分子化学
吸附
结晶学
分子
金属有机骨架
胺气处理
选择性
对苯二甲酸
单晶
晶体结构
无机化学
物理化学
有机化学
催化作用
聚酯纤维
作者
Xiao‐Li Hu,Qihan Gong,Rong‐Lin Zhong,Xinlong Wang,Chao Qin,Hao Wang,Jing Li,Kui‐Zhan Shao,Zhong‐Min Su
标识
DOI:10.1002/chem.201406495
摘要
Two pillared-layer metal-organic frameworks (MOFs; PMOF-55 and NH2 -PMOF-55) based on 1,2,4-triazole and terephthalic acid (bdc)/NH2 -bdc ligands were assembled and display framework stabilities, to a certain degree, in both acid/alkaline solutions and toward water. They exhibit high CO2 uptakes and selective CO2 /N2 adsorption capacities, with CO2 /N2 selectivity in the range of 24-27, as calculated by the ideal adsorbed solution theory method. More remarkably, the site and interactions between the host network and the CO2 molecules were investigated by single-crystal X-ray diffraction, which showed that the main interaction between the CO2 molecules and PMOF-55 is due to multipoint supramolecular interactions of C-H⋅⋅⋅O, C⋅⋅⋅O, and O⋅⋅⋅O. Amino functional groups were shown to enhance the CO2 adsorption and identified as strong adsorption sites for CO2 by X-ray crystallography.
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