Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 10, 2019
Previous Article Next Article

Nanosheets of MIL-53(Al) applied in membranes with improved CO2/N2 and CO2/CH4 selectivities

Author affiliations

Abstract

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).

Graphical abstract: Nanosheets of MIL-53(Al) applied in membranes with improved CO2/N2 and CO2/CH4 selectivities

Back to tab navigation

Supplementary files

Publication details

The article was received on 18 Sep 2018, accepted on 05 Oct 2018 and first published on 05 Oct 2018


Article type: Paper
DOI: 10.1039/C8DT03774D
Citation: Dalton Trans., 2019,48, 3392-3403

  •   Request permissions

    Nanosheets of MIL-53(Al) applied in membranes with improved CO2/N2 and CO2/CH4 selectivities

    A. Perea-Cachero, J. Sánchez-Laínez, B. Zornoza, E. Romero-Pascual, C. Téllez and J. Coronas, Dalton Trans., 2019, 48, 3392
    DOI: 10.1039/C8DT03774D

Search articles by author

Spotlight

Advertisements