[BMIM][NTf2] was selected due to the larger increase in CO2 uptake on going from the neat liquid to the 12.5 wt. % dispersion. The porous liquid also demonstrated excellent CO2/CH4 selectivity, whereas the silicone oil had a CH4 uptake that was four times greater than the neat ionic liquid [BMIM][NTf2]. In addition, for the specific sample of MOF and batch of ionic liquid used in this screen, the CO2 uptake in the 12.5 wt. % dispersion corresponded to 74% of the theoretical total uptake, based on the calculated CO2 uptake from the proportion of the MOF (749 µmol/g) combined with the uptake of the neat liquid (83 µmol/gL); that is, the porous liquid expresses 74% of the total uptake that would be expected assuming a linearly additive system upon mixing.