Microporous Lanthanide Metal-Organic Framework Constructed from Lanthanide Metalloligand for Selective Separation of CH/CO and CH/CH at Room Temperature.

A novel pillar-layer porous lanthanide metal-organic framework [Tb(ODA)(BPDC)Na]·G (UTSA-222, G = guest molecules) was constructed from an organic ligand [1,1'-biphenyl]-4,4'-dicarboxylate (BPDC) and a lanthanide metalloligand [Tb(ODA)] (HODA = oxydiacetic acid). The UTSA-222 contains two-dimensional intersecting channels with the Brunauer-Emmett-Teller surface area and pore volume of 703 m g and 0.344 cm g, respectively, for the activated sample. It shows moderately high adsorption selectivity for CH/CO and CH/CH separations at 1 atm and room temperature.