Influence of filler pore structure and polymer on the performance of MOF-based mixed matrix membranes for CO2 capture

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 (NH2‐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 CO2 from N2 are explained on the basis of gas solubility, diffusivity properties, and compatibility between the filler and polymer phases.

Citation

Sabetghadam , A , Liu , X , Benzaqui , M , Gkaniatsou , E , Orsi , A , Lozinska , M M , Sicard , C , Johnson , T , Steunou , N , Wright , P A , Serre , C , Gascon , J & Kapteijn , F 2018 , ' Influence of filler pore structure and polymer on the performance of MOF-based mixed matrix membranes for CO 2 capture ' , Chemistry - A European Journal , vol. 24 , no. 31 , pp. 7949-7956 . https://doi.org/10.1002/chem.201800253

Publication

Chemistry - A European Journal

Status

Peer reviewed

DOI

https://doi.org/10.1002/chem.201800253

ISSN

0947-6539

Type

Journal article

Rights

© 2018 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This work has been made available online in accordance with the publisher’s policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1002/chem.201800253

Description

Financial support of the European Research Council under the European Union’s Seventh Framework Programme (FP/2007-2013), M4CO2 project (608490) is gratefully acknowledged.

Collections

University of St Andrews Research

URI

http://hdl.handle.net/10023/17694