Highly selective sorption of CO2 and N2O and strong gas-framework interactions in a nickel(ii) organic material†
Abstract
A new robust microporous Ni-MOF with cylindrical channels based on an interesting 41 helix structure was fabricated by the reaction of biphenyl-3,3′,5,5′-tetracarboxylic acid and nickel (II) acetate via a solvothermal method. Activated Ni-MOF exhibits excellent CO2 and N2O sorption capabilities as well as high separations of CO2 and N2O over N2/O2/CH4/H2/Ar/He at 273 K, 298 K and 313 K. Moreover, the framework shows high isosteric heats of adsorption of three main greenhouse gases (CO2, CH4 and N2O).