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Ultramicroporous iron-isonicotinate MOFs combining size-exclusion kinetics and thermodynamics for efficient CO 2 /N 2 gas separation.

Isabel Abánades LázaroEleni C MazarakiotiEduardo Andres-GarciaBruno J C VieiraJoao Carlos WaerenborghIñigo J Vitórica-YrezábalMónica Giménez-MarquésGuillermo Mínguez Espallargas
Published in: Journal of materials chemistry. A (2023)
Two ultramicroporous 2D and 3D iron-based Metal-Organic Frameworks (MOFs) have been obtained by solvothermal synthesis using different ratios and concentrations of precursors. Their reduced pore space decorated with pendant pyridine from tangling isonicotinic ligands enables the combination of size-exclusion kinetic gas separation, due to their small pores, with thermodynamic separation, resulting from the interaction of the linker with CO 2 molecules. This combined separation results in efficient materials for dynamic breakthrough gas separation with virtually infinite CO 2 /N 2 selectivity in a wide operando range and with complete renewability at room temperature and ambient pressure.
Keyphrases
  • room temperature
  • metal organic framework
  • liquid chromatography
  • ionic liquid
  • mass spectrometry
  • particulate matter
  • iron deficiency
  • highly efficient