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

Anahid Sabetghadam (1) , Xinlei Liu (1) , Marvin Benzaqui (2) , Effrosyni Gkaniatsou (2) , Angelica Orsi (3) , Magdalena M. Łozińska (3) , Clémence Sicard (2) , Timothy Johnson (4) , Nathalie Steunou (2) , Paul A Wright (3) , Serre Christian (5) , Jorge Gascon (6) , Freek Kapteijn

1 Catalysis Engineering - ChemE, Delft University of Technology, Van der Maasweg 9, 2629HZ Delft
2 ILV - Institut Lavoisier de Versailles
3 EaStCHEM School of Chemistry
4 Johnson Matthey Technology Centre
5 IMAP - Institut des Matériaux Poreux de Paris
6 Catalysis Engineering - ChemE, Delft University of Technology, Van der Maasweg 9, 2629HZ Delft,

Membrane gas separation units are gaining increasing attention owing to their relatively low energy consumption, ease of operation and environmental aspects. Metal-organic framework (MOF)-mixed matrix membranes (MMMs) are proposed as alternative materials delivering both the promising performance benefits from embedded MOF fillers and the processing features of polymers. In order to gain insight into the influence of MOF filler and polymer on membrane performance, eight different composites are studied by combining four MOFs and two polymers. MOF materials (NH2-MIL-53(Al), MIL-69(Al), MIL-96(Al) and ZIF-94(Zn)) with various chemical functionalities, topologies, and dimensionalities of porosity were employed as fillers, while two typical polymers with different permeability-selectivity properties (6FDA-DAM and Pebax) were deliberately selected as matrices. Separation results are rationalized on the basis of thorough characterization of the main components of the composites. 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.

Domaines: Chimie

Anahid Sabetghadam, Xinlei Liu, Marvin Benzaqui, Effrosyni Gkaniatsou, Angelica Orsi, et al.. Influence of Filler Pore Structure and Polymer on the Performance of MOF-Based Mixed-Matrix Membranes for CO 2 Capture. Chemistry - A European Journal, 2018, 24 (31), pp.7949-7956. ⟨10.1002/chem.201800253⟩. ⟨hal-03113659⟩