A porous Zn-based metal-organic framework with an expanded tricarboxylic acid ligand for effective CO2 capture and CO2/CH4 separation

A nanosized carboxylate ligand has been applied in the construction of a highly porous MOF, which reveals a 3-fold interpenetrated framework with a large calculated void volume (69.7%). The activated MOF shows exceptional porosities and high CO2 uptake capacities as well as good selectivity of CO2/CH4 at room temperature.211