Benchmark single-step ethylene purification from ternary mixtures by a customized fluorinated anion-embedded MOF

Abstract Ethylene (C 2 H 4 ) purification from multi-component mixtures by physical adsorption is a great challenge in the chemical industry. Herein, we report a GeF 6 2- anion embedded MOF (ZNU-6) with customized pore structure and pore chemistry for benchmark one-step C 2 H 4 recovery from C 2 H 2 and CO 2 . ZNU-6 exhibits significantly high C 2 H 2 (1.53 mmol/g) and CO 2 (1.46 mmol/g) capacity at 0.01 bar. Record high C 2 H 4 productivity is achieved from C 2 H 2 /CO 2 /C 2 H 4 mixtures in a single adsorption process under various conditions. The separation performance is retained over multiple cycles and under humid conditions. The potential gas binding sites are investigated by density functional theory…

• NN
  National Natural Science Foundation of China

  Awards: 21908193, 22205207