期刊
CHEMSUSCHEM
卷 7, 期 9, 页码 2647-2653出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201402206
关键词
adsorption; anionic materials; indium; light hydrocarbons; metal-organic frameworks
资金
- 973 Program [2011CB932504, 2013CB933200]
- NSFC [21273238, 21221001, 21331006]
- NSF of Fujian Province [2014J05022]
- Chunmiao Project of Haixi Institute of Chinese Academy of Sciences [CMZX-2014-004]
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.
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