Influence of Filler Pore Structure and Polymer on the Performance of MOF-Based Mixed-Matrix Membranes for CO 2 Capture.

Authors :: Sabetghadam A
Liu X
Benzaqui M
Gkaniatsou E
Orsi A
Lozinska MM
Sicard C
Johnson T
Steunou N
Wright PA
Serre C
Gascon J
Kapteijn F
Source :: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2018 Jun 04; Vol. 24 (31), pp. 7949-7956. Date of Electronic Publication: 2018 May 14.
Publication Year :: 2018
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 <subscript>2</subscript> -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 25 wt % 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 <subscript>2</subscript> from N <subscript>2</subscript> are explained on the basis of gas solubility, diffusivity properties, and compatibility between the filler and polymer phases.<br /> (© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)

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