fig4

Figure 4. (A) Selectivity of equimolar mixtures of C₃H₈ over CH₄ for Cu-AD-FA, Cu-AD-AA and Cu-AD-PA; (B) Selectivity of equimolar mixtures of C₂H₆ over CH₄ for Cu-AD-FA, Cu-AD-AA and Cu-AD-PA; (C) Selectivity of equimolar mixtures of C₃H₆ over C₂H₄ for Cu-AD-FA, Cu-AD-AA and Cu-AD-PA; (D) Comparison of IAST selectivity of C₃H₆/C₂H₄ (0.5/0.5) with other reported MOFs. IAST: Ideal adsorbed solution theory; MOFs: metal–organic frameworks.