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Ultramicroporous iron-isonicotinate MOFs combining size-exclusion kinetics and thermodynamics for efficient CO2/N2 gas separation† † Electronic supplementary information (ESI) available: Containing experimental conditions, detailed characterisation and breakthrough gas separation measurements available. CCDC 2217199–2217202, 2237339–2237340. For ESI and crystallographic data in CIF or other electronic format see DOI: https://doi.org/10.1039/d2ta08934c

ABSTRACT: 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 CO2 molecules. This combined separation results in efficient materials for dynamic breakthrough gas separation with virtually infinite CO2/N2 selectivity in a wide operando range and with complete renewability at room temperature and ambient pressure. Using the commercially available isonicotinic acid and iron, we report two ultramicroporous MOFs, denoted MUV-26.

SUBMITTER: Abanades Lazaro I

PROVIDER: S-EPMC9990143 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature

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