Influence of Filler Pore Structure and Polymer on the Performance of MOF-Based Mixed-Matrix Membranes for CO2 Capture

Anahid Sabetghadam, Xinlei Liu, Marvin Benzaqui, Effrosyni Gkaniatsou, Angelica Orsi, Magdalena M. Lozinska, Clemence Sicard, Timothy Johnson, Nathalie Steunou, Paul A. Wright, Christian Serre, Jorge Gascon, Freek Kapteijn

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

To gain insight into the influence of metal-organic framework (MOF) fillers and polymers on membrane performance, eight different composites were studied by combining four MOFs and two polymers. MOF materials (NH-MIL-53(Al), MIL-69(Al), MIL-96(Al) and ZIF-94) with various chemical functionalities, topologies, and dimensionalities of porosity were employed as fillers, and two typical polymers with different permeability-selectivity properties (6FDA-DAM and Pebax) were selected as matrices. The best-performing MOF-polymer composites were prepared by loading 25wt% of MIL-96(Al) as filler, which improved the permeability and selectivity of 6FDA-DAM to 32 and 10%, while for Pebax they were enhanced to 25 and 18%, respectively. The observed differences in membrane performance in the separation of CO from N are explained on the basis of gas solubility, diffusivity properties, and compatibility between the filler and polymer phases.
Original languageEnglish (US)
Pages (from-to)7949-7956
Number of pages8
JournalChemistry - A European Journal
Volume24
Issue number31
DOIs
StatePublished - May 14 2018

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