A 3D Ba-MOF for selective adsorption of CO2/CH4 and CO2/N2

An unexpected in-situ hydrolysis reaction occurred during the solvothermal reaction of N,N′-bis(4-carboxy-2-methylphenyl)pyromellitic di-imide) and Ba(NO3)2, and a novel porous Ba-MOF, [H2N(CH3)​2]0.5[Ba1.5(L)(DMA)]·1.5DMA·1.5H2O (UPC-70, H3L = 2-(4-carboxy-2-methylphenyl)-1,3-dioxoisoindoline-5,6-dicarboxylic acid, DMA = N,N-dimethylacetamide), was obtained on the basis of the partial hydrolysate. The as-synthesized 3D network with 1D open...