期刊
INORGANIC CHEMISTRY
卷 62, 期 40, 页码 16574-16581出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.3c02486
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This article introduces a new type of metal-organic framework material with excellent acetylene separation performance. By functionalizing the metal-organic framework, the adsorption and selectivity of acetylene are improved, effectively separating acetylene from other light hydrocarbons and carbon dioxide mixtures.
Separating acetylene (C2H2) from other light hydrocarbons and carbon dioxide (CO2) mixtures under mild conditions poses significant challenges due to the remarkably similar properties between C2H2 and those gases. For the goal of C2H2 separation, a F-functionalized organic linker, H2F-PyIP = 2-fluorine-5-(4-pyridyl)isophthalic acid, was designed, and the corresponding metal-organic framework (MOF), {[Co-2(F-PyIP)(2)DMF]4H(2)O}(n) (1), was constructed. The MOF with open channels decorated by the active sites of the F groups revealed the exceptional C2H2 uptake and selectivity over CO2, C2H4, and CH4. The breakthrough experiments with different molar ratios of C2H2-C2H4, C2H2-CO2, and other gas mixtures further verified superior separation capacity of the MOF. In particular, the dynamic separation time intervals for gas mixtures (C2H2/CO2 = 1:1, 1:5, 1:10, and 1:20) fell in the range 30-44 min, highlighting the potential of the MOF for tackling the challenging C2H2/CO2 separation process.
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