135159 20260217205535.0 doi 10.1039/d3ta07109j sideral 138540 ART-2024-138540 eng Pérez-Miana, Marta Universidad de Zaragoza (orcid)0000-0001-8572-1760 ZIF-8 modified with 2-undecylimidazolate as filler for mixed matrix membranes for CO₂ separation 2024 Access copy available to the general public Unrestricted A novel modification of zeolitic imidazolate framework-8 (ZIF-8) with 2-undecylimidazolate (umIm) was explored to enhance its hydrophobic character and improve its compatibility with polymer of intrinsic microporosity PIM-1 when incorporated as a filler in mixed matrix membranes (MMMs). In addition to the study of the best conditions to exchange the structural ligand of ZIF-8 by umIm and the characterization (by FTIR, RMN, XRD, TGA, N2 adsorption and TEM) of the obtained material, comparative analyses were conducted using MMMs containing the original ZIF-8 and the modified version. Different loadings were applied to study the impact on gas separation properties. Remarkably, the MMM with the modified ZIF-8 demonstrated superior performance surpassing the Robeson upper bound line of 2008 and revealing the effectiveness of this MOF modification strategy. In fact, with the 10 wt% ZIF-8-umIm loading MMM, the highest value of CO2/N2 selectivity was 15.4 (12% higher than that of bare PIM-1) at a CO2 permeability of 16 667 Barrer (52% higher than that of bare PIM-1). These findings highlight the promising potential of the ZIF-8 modification with umIm as a valuable filler material for MMMs in gas separation applications. info:eu-repo/grantAgreement/ES/DGA/E13-23R info:eu-repo/grantAgreement/ES/DGA/T68-23R info:eu-repo/grantAgreement/ES/MCIN-AEI/PID2019-104009RB-I00-AEI-10.13039-501100011033 info:eu-repo/grantAgreement/ES/MICINN/PID2022-138582OB-I00 info:eu-repo/grantAgreement/ES/MICINN/RYC-2018-024561-I info:eu-repo/grantAgreement/EUR/MICINN/TED2021-130621B-C41 info:eu-repo/semantics/openAccess by-nc https://creativecommons.org/licenses/by-nc/4.0/deed.es 9.5 2024 CHEMISTRY, PHYSICAL 33 / 185 = 0.178 2024 Q1 T1 MATERIALS SCIENCE, MULTIDISCIPLINARY 63 / 461 = 0.137 2024 Q1 T1 ENERGY & FUELS 29 / 182 = 0.159 2024 Q1 T1 2.462 2024 Chemistry (miscellaneous) 2024 Q1 Renewable Energy, Sustainability and the Environment 2024 Q1 Materials Science (miscellaneous) 2024 Q1 16.7 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Luque-Alled, José Miguel Universidad de Zaragoza (orcid)0000-0001-5002-7197 Yahia, Mohamed Mayoral, Álvaro (orcid)0000-0002-5229-2717 Coronas, Joaquín Universidad de Zaragoza (orcid)0000-0003-1512-4500 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 12, 17 (2024), 10316-10328 J. mater. chem. A Journal of Materials Chemistry A 2050-7488 1834128 http://zaguan.unizar.es/record/135159/files/texto_completo.pdf Versión publicada 2976595 http://zaguan.unizar.es/record/135159/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:135159 articulos driver 2026-02-17-20:34:10 ARTICLE