Abstract
A hms-type microporous metal-organic framework, {[Ca3(NTB)2(H2O)2]·NMF·4NMP·4H2O}n (Ca-MOF, H3NTB = 4,4′,4″-nitrilotrisbenzoic acid, NMF = N-methyl formamide, NMP = N-methyl-2-pyrrolidone), was solvothermal synthesized. Desolvated Ca-MOF shows relatively high C2 hydrocarbons and CO2 storage capacity at 298 K and 1 atm (C2H2: 107.0 cm3 g−1, C2H4: 79.0 cm3 g−1, C2H6: 99.2 cm3 g−1, CO2: 65.9 cm3 g−1), and a lower CH4 adsorption uptake (14.6 cm3 g−1). Its ideal adsorbed solution theory (IAST)-predicted selectivities of C2 hydrocarbons and CO2 over CH4 range from 5.7 to 10.0 at room temperature, indicating its potential for separation of C2 hydrocarbons and CO2 from CH4.
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