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A porous Zn-based metal-organic framework with an expanded tricarboxylic acid ligand for effective CO2 capture and CO2/CH4 separation

Publication date:

August 2018


Source:Inorganic Chemistry Communications, Volume 94

Author(s): Feng-Xian Gao, Ying-Jie Ye, Long-Tao Zhao, Dong-Hai Liu, Yue Li

A trigonal nanosized carboxylate ligand, 4, 4′,4″-(triazine-2,4,6-triyl-tris(benzene-4,1-diyl))tribenzoic acid (H3TAPB), has been applied in the construction of a highly porous metal−organic framework (MOF). A solvothermal reaction of H3TAPB and a zinc salt in a mixed solvent of DEF/dioxane/H2O produces the targeted porous MOF [Zn3(TAPB)2(H2O)2](DEF)4(H2O)3 (1, DEF = N,N-Diethylformamide). This MOF contains a linear Zn3 secondary building unit with two terminal water molecules occupied the axis positions, which is connected by the TAPB3− ligands to afford a 3-fold interpenetrated framework with a large calculated void volume (69.7%). The activated MOF shows exceptional porosities and high CO2 uptake capacities as well as good sorption selectivity of CO2/CH4 around room temperature.
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Authors:   Author(s): Feng-Xian Gao, Ying-Jie Ye, Long-Tao Zhao, Dong-Hai Liu, Yue Li
Journal:   Inorganic Chemistry Communications
Year:   2018
Publication date:   10-Jun-2018
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