Porous Anionic Indium-Organic Framework with Enhanced Gas and Vapor Adsorption and Separation Ability
Porous Anionic Indium-Organic Framework with Enhanced Gas and Vapor Adsorption and Separation Ability
复制标题
具有增强气体和蒸气吸附和分离能力的多孔阴离子铟有机骨架
DOI：
10.1002/cssc.201402206
复制
发表时间：
2014-09-01
期刊：
影响因子：
8.4
通讯作者：
Cao, Rong
中科院分区：
文献类型：
--
作者：
Huang, Yuanbiao;Lin, Zujin;Cao, Rong
合成了一种具有大晶胞体积的三维微孔阴离子金属有机骨架（MOF）（Et 4 N）3[In-3（TATB）（4）]（FJI-C1，H（3）TATB= 4，4 '，4“-s-triazine-2，4，6-triyltribenzoic acid）。在化合物孔隙中的有机阳离子基团Et 4 N的辅助下，FJI-C1不仅表现出对C-2和C-3烃的高吸附吸收，而且在室温下表现出对丙烷、乙炔、乙烷和乙烯的高选择性分离。此外，它还表现出对丙烷的高分离选择性，而对C_2H_4和C_2H_6的高选择性使得乙炔可以在低压下容易地从它们的C_2烃混合物中分离。此外，具有亲水性内孔表面的FJI-C1显示出极性分子与非极性分子的高效吸附分离。值得注意的是，由于苯分子与多孔MOF的均三嗪环之间的π-π相互作用，其表现出对苯相对于环己烷的高分离选择性。
A three-dimensional microporous anionic metal-organic framework (MOF) (Et4N) 3[In-3(TATB)(4)] (FJI-C1, H(3)TATB= 4,4',4''-s-triazine-2,4,6-triyltribenzoic acid) with large unit cell volume has been synthesized. Assisted by the organic cation group Et4N in the pores of the compound, FJI-C1 not only shows high adsorption uptakes of C-2 and C-3 hydrocarbons, but also exhibits highly selective separation of propane, acetylene, ethane, and ethylene from methane at room temperature. Furthermore, it also exhibits high separation selectivity for propane over C-2 hy-drocarbons and acetylene can be readily separated from their C-2 hydrocarbons mixtures at low pressure due to the high selectivity for C2H2 in comparison to C2H4 and C2H6. In addition, FJI-C1 with hydrophilic internal pores surfaces shows highly efficient adsorption separation of polar molecules from nonpolar molecules. Notably, it exhibits high separation selectivity for benzene over cyclohexane due to the pi-pi interactions between benzene molecules and s-triazine rings of the porous MOF.