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Título: | Nanosheets of MIL-53(Al) applied in membranes with improved CO2/N2 and CO2/CH4 selectivities |
Autor: | Perea-Cachero, Adelaida CSIC ORCID; Sánchez-Laínez, Javier CSIC ORCID; Zornoza, Beatriz CSIC ORCID; Romero-Pascual, Enrique; Téllez, Carlos CSIC ORCID; Coronas, Joaquín CSIC ORCID | Fecha de publicación: | 2019 | Editor: | Royal Society of Chemistry (UK) | Citación: | Dalton Transactions 48(10): 3392-3403 (2019) | Resumen: | MIL-68(Al) and MIL-53(Al) are carboxylate-based metal–organic frameworks (MOFs) with the same chemical composition but different structures (polymorphs). In this study, MIL-53(Al) nanosheets of ca. 150 nm in size with an average thickness of 3.5 ± 0.9 nm were obtained after immersion of a sample composed of MIL-68(Al) and MIL-53(Al) in water under different conditions (ultrasound, stirring, reflux, 60 °C and room temperature). The disaggregated MIL-53(Al) nanosheets produced under more severe conditions were suspended in a PDMS solution and then deposited on asymmetric polyimide P84® supports under vacuum filtration to form supported mixed matrix membranes (MMMs). When applied to the separation of CO2/CH4 and CO2/N2 mixtures, the MMM with MIL-53(Al) nanosheets improved the CO2/CH4 (28.4–28.7 vs. 22.4) and CO2/N2 (19.9–23.2 vs. 17.5) selectivities of the conventional MIL-53(Al) MMM with higher CO2 permeances (20.8–29.6 GPU vs. 9.5 GPU for CO2/CH4 and 17.7–26.8 GPU vs. 11.2 GPU for CO2/N2). | Versión del editor: | https://doi.org/10.1039/C8DT03774D | URI: | http://hdl.handle.net/10261/202319 | DOI: | 10.1039/C8DT03774D | ISSN: | 1477-9226 | E-ISSN: | 1477-9234 |
Aparece en las colecciones: | (ICMA) Artículos |
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Nanosheets of MIL.pdf | 840,04 kB | Adobe PDF | Visualizar/Abrir |
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