Figure 3. a) Adsorption isotherms of Mn-bpdc MOF for single component C4H6 at different temperatures;b) Adsorption isotherms of Mn-bpdc MOF for single component C4H6, n-C4H8, iso-C4H8, n-C4H10 and iso-C4H10 at 273 K; c)Adsorption isotherms of Mn-bpdc MOF for single component C4H6, n-C4H8, iso-C4H8, n-C4H10 and iso-C4H10 at 298 K, respectively;d) The comparison of uptake selectivity of C4H6/n-C4H8and C4H6/iso-C4H8with reported adsorbents at 298 K and 1 bar.