Nanosheets of MIL-53(Al) applied in membranes with improved CO 2 /N 2 and CO 2 /CH 4 selectivities

Perea-Cachero, A. (Universidad de Zaragoza) ; Sánchez-Laínez, J. (Universidad de Zaragoza) ; Zornoza, B. ; Romero-Pascual, E. (Universidad de Zaragoza) ; Téllez, C. (Universidad de Zaragoza) ; Coronas, J. (Universidad de Zaragoza)

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 CO 2 /CH 4 and CO 2 /N 2 mixtures, the MMM with MIL-53(Al) nanosheets improved the CO 2 /CH 4 (28.4-28.7 vs. 22.4) and CO 2 /N 2 (19.9-23.2 vs. 17.5) selectivities of the conventional MIL-53(Al) MMM with higher CO 2 permeances (20.8-29.6 GPU vs. 9.5 GPU for CO 2 /CH 4 and 17.7-26.8 GPU vs. 11.2 GPU for CO 2 /N 2 ).

Idioma: Inglés

DOI: 10.1039/c8dt03774d

Año: 2019

Publicado en: Dalton Transactions 48, 10 (2019), 3392-3403
ISSN: 1477-9226

Factor impacto JCR: 4.174 (2019)

Categ. JCR: CHEMISTRY, INORGANIC & NUCLEAR rank: 5 / 45 = 0.111 (2019) - Q1 - T1

Factor impacto SCIMAGO: 1.048 - Inorganic Chemistry (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA-FSE/T43-17R
Financiación: info:eu-repo/grantAgreement/ES/MEC/FPU2014
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2016-77290-R

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)