Fine pore engineering in a series of isoreticular metal-organic frameworks for efficient C2H2/CO2 separation

Abstract The separation of C 2 H 2 /CO 2 is not only industrially important for acetylene purification but also scientifically challenging owing to their high similarities in physical properties and molecular sizes. Ultramicroporous metal-organic frameworks (MOFs) can exhibit a pore confinement effect to differentiate gas molecules of similar size. Herein, we report the fine-tuning of pore sizes in sub-nanometer scale on a series of isoreticular MOFs that can realize highly efficient C 2 H 2 /CO 2 separation. The subtle structural differences lead to remarkable adsorption performances enhancement. Among four MOF analogs, by integrating appropriate pore size and specific binding sites, [Cu(dps) 2 (SiF 6 )]…

• NN
  National Natural Science Foundation of China

  Awards: 22008099, 22168023, 21908090, 20192ACB21015
• SY
  Sun Yat-sen University
• NS
  Natural Science Foundation of Jiangxi Province

  Awards: 20192ACB21015, 21908090