Figure 2: IAST calculations for binary CO₂/CH₄ mixtures on the MOFs.

(a) Comparison of the loading dependence of the isosteric heats of pure CO₂ adsorption on the porous materials. (b,c) CO₂/CH₄ adsorption selectivity for the variety of MOFs considered in this work. (d) CO₂ uptake volumetric capacity of some important MOFs. In these calculations, the partial pressures of CO₂ and CH₄ are taken to be equal to each other, that is, p₁=p₂=100 Pa. All calculations are for 296 K, using the T-dependent isotherm parameters reported in Supplementary Tables S3–S33. The calculations of the Q_st of Cu-TDPAT are those reported in the paper by Li et al.⁴⁴