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

Authors :: Abánades Lázaro I
Mazarakioti EC
Andres-Garcia E
Vieira BJC
Waerenborgh JC
Vitórica-Yrezábal IJ
Giménez-Marqués M
Mínguez Espallargas G
Source :: Journal of materials chemistry. A [J Mater Chem A Mater] 2023 Feb 17; Vol. 11 (10), pp. 5320-5327. Date of Electronic Publication: 2023 Feb 17 (Print Publication: 2023).
Publication Year :: 2023
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 CO <subscript>2</subscript> molecules. This combined separation results in efficient materials for dynamic breakthrough gas separation with virtually infinite CO <subscript>2</subscript> /N <subscript>2</subscript> selectivity in a wide operando range and with complete renewability at room temperature and ambient pressure.<br />Competing Interests: There are no conflicts to declare.<br /> (This journal is © The Royal Society of Chemistry.)

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