132446 20260217205505.0 doi 10.1016/j.seppur.2023.125558 sideral 137578 ART-2024-137578 eng Yahia, Mohamed Microwave-assisted synthesis of metal–organic frameworks UiO-66 and MOF-808 for enhanced CO2/CH4 separation in PIM-1 mixed matrix membranes 2024 Access copy available to the general public Unrestricted This study presents a sustainable microwave-assisted synthesis, based on the use of acetone and a water/acetic acid mixture instead of typical harmful DMF, to fabricate Zr-metal–organic frameworks (MOFs) UiO-66 and MOF-808 as fillers in a PIM-1 matrix for gas separation application. The mixed matrix membranes (MMMs) were prepared with varying loadings (2.5–10 wt%) of MOFs. The physicochemical properties (1H NMR, FTIR, XRD, N2 adsorption, TGA and SEM) of the resulting PIM-1, MOFs and MMMs were analyzed. The CO2/CH4 separation performance and membrane aging characteristics of the MMMs were evaluated. The incorporation of MOF fillers significantly improved CO2 permeability and CO2/CH4 selectivity, attributed to their CO2-philicity and narrow pore size (UiO-66 ≈ 0.6 nm and MOF-808 ≈ 1.8 nm). The MMMs with higher filler loadings (7.5 and 10 wt%) exhibited the most favorable separation performance. Due to the better crystallinity and textural properties, MOF-808 produced the best separation results at 10 wt% filler loading (a CO2/CH4 separation selectivity of 16.2 at 9090 Barrer of CO2 permeability). Aging led to a decrease in CO2 permeability but a slight increase in CO2/CH4 selectivity for all MMMs. Overall, the study highlights the potential of PIM-1/UiO-66 and PIM-1/MOF-808 MMMs as efficient materials for (CO2/CH4) separation comparing with the pristine PIM-1. info:eu-repo/grantAgreement/ES/DGA/T68-23R info:eu-repo/grantAgreement/EUR/MICINN/TED2021-130621B-C41 info:eu-repo/grantAgreement/ES/MINECO-AEI/PID2019-104009RB-I00-AEI-10.13039-501100011033 info:eu-repo/semantics/openAccess by-nc-nd https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es 9.0 2024 ENGINEERING, CHEMICAL 16 / 176 = 0.091 2024 Q1 T1 1.697 2024 Filtration and Separation 2024 Q1 Analytical Chemistry 2024 Q1 15.1 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Lozano, Luis A. Zamaro, Juan M. Téllez, Carlos Universidad de Zaragoza (orcid)0000-0002-4954-1188 Coronas, Joaquín Universidad de Zaragoza (orcid)0000-0003-1512-4500 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 330, C (2024), 125558 [13 pp.] Sep. Purif. Technol. Separation and Purification Technology 1383-5866 9905268 http://zaguan.unizar.es/record/132446/files/texto_completo.pdf Versión publicada 2597631 http://zaguan.unizar.es/record/132446/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:132446 articulos driver 2026-02-17-20:23:09 ARTICLE