A versatile microporous metal-organic framework (MOF), {[Cu(TIA)]·1.5CHOH} (), was successfully obtained via the solvothermal reaction of cuprous(II) salt with the bifunctional ligand 3-(1-1,2,4-triazol-1-yl)isophthalic acid. Single-crystal X-ray diffraction studies indicate that contains an three-dimensional skeleton and two types of one-dimensional channels. The framework of has excellent acid-alkali resistance and thermal stability, which is stable in a pH = 2-13 aqueous solution and an 260 °C air environment. In addition, the microporous copper MOF shows very high uptakes of CO (180 cm·g) and CH (113 cm·g) at 273 K and displays excellent adsorption selectivity for small molecular gases. The ideal adsorbed solution theory selectivity values for CH/CH, CO/CH, and CO/N are 2, 9, and 22 at 298 K, respectively. At the same time, breakthrough experiments for CO/CH, CO/N, and CH/CH were further conducted to verify the efficient separation performances.
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