Abstract
A new microporous Ni-based metal-organic framework (Ni-MOF-1) was synthesized by reaction of Ni(NO)3·6H2O with the binary ligands of tetracarboxylic 2,3,5,6-tetrakis(4-carboxyphenyl)pyrazine (H4TCPP) and 4,4′-bipyridine under solvothermal reaction. The single crystal X-ray diffraction indicates that Ni-MOF-1 possesses a three-dimensional porous network with novel trinuclear Ni3(OH)2(COO)4(HCOO)4 clusters, exhibiting high CO2 uptakes of 37.57 cm3 g−1 and high selectivity of CO2 over N2 (42.89) at 273 K.
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