A porous Zn-based metal-organic framework with an expanded tricarboxylic acid ligand for effective CO2 capture and CO2/CH4 separation
A porous Zn-based metal-organic framework with an expanded tricarboxylic acid ligand for effective CO2 capture and CO2/CH4 separation
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具有扩展三羧酸配体的多孔锌基金属有机框架，可有效捕获 CO2 和 CO2/CH4 分离
DOI：
10.1016/j.inoche.2018.05.031
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发表时间：
2018-08-01
影响因子：
3.8
通讯作者：
Li, Yue
中科院分区：
文献类型：
--
作者：
Gao, Feng-Xian;Ye, Ying-Jie;Li, Yue
一种三角形纳米羧酸配体4，4 '，4“-（三嗪-2，4，6-三（苯-4，1-二基））三苯甲酸（H（3）TAPB）已被应用于高度多孔金属有机骨架（MOF）的构建。H（3）TAPB和锌盐在DEF/二氧杂环己烷/H2O的混合溶剂中的溶剂热反应产生目标多孔MOF [Zn-3（TAPB）（2）（H2O）（2）]（DEF）（4）（H2O）（3）（1，DEF = N，N-二乙基甲酰胺）。该MOF包含线性Zn-3二级结构单元，其中两个末端水分子占据轴位置，其通过TAPB（3-）配体连接以提供具有大的计算空隙体积（69.7%）的3重互穿框架。活化的MOF显示出优异的孔隙率和高的CO2吸收能力，以及良好的吸附选择性的CO2/CH 4在室温左右。
A trigonal nanosized carboxylate ligand, 4, 4',4 ''-(triazine-2,4,6-triyl-tris(benzene-4,1-diy1))tribenzoic acid (H(3)TAPB), has been applied in the construction of a highly porous metal - organic framework (MOF). A solvothermal reaction of H(3)TAPB and a zinc salt in a mixed solvent of DEF/d ioxane/H2O produces the targeted porous MOF [Zn-3(TAPB)(2)(H2O)(2)](DEF)(4)(H2O)(3) (1, DEF = N,N-Dielhylformamide). This MOF contains a linear Zn-3 secondary building unit with two terminal water molecules occupied the axis positions, which is connected by the TAPB(3-) 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.