Towards High Performance Metal–Organic Framework–Microporous Polymer Mixed Matrix Membranes: Addressing Compatibility and Limiting Aging by Polymer Doping

Membrane separation for gas purification is an energy‐efficient and environment‐friendly technology. However, the development of high performance membranes is still a great challenge. In principle, mixed matrix membranes (MMMs) have the potential to overcome current materials limitations, but in pra...

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Bibliographic Details
Published in:Chemistry : a European journal 2018-09, Vol.24 (49), p.12796-12800
Main Authors: Sabetghadam, Anahid, Liu, Xinlei, Orsi, Angelica F., Lozinska, Magdalena M., Johnson, Timothy, Jansen, Kaspar M. B., Wright, Paul A., Carta, Mariolino, McKeown, Neil B., Kapteijn, Freek, Gascon, Jorge
Format: Article
Language:English
Subjects:
Aging
Carbon dioxide
Carbon sequestration
Chemistry
compatibility
Fillers
gas separation
Membrane separation
Membranes
Metal-organic frameworks
Metals
microporous polymer
Polymers
Powder injection molding
Purification
Separation
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Summary:Membrane separation for gas purification is an energy‐efficient and environment‐friendly technology. However, the development of high performance membranes is still a great challenge. In principle, mixed matrix membranes (MMMs) have the potential to overcome current materials limitations, but in practice there is no straightforward method to match the properties of fillers and polymers (the main components of MMMs) in such a way that the final membrane performance reflects the high performance of the microporous filler and the processability of the continuous polymer phase. This issue is especially important when high flux polymers are utilized. In this work, we demonstrate that the use of small amounts of a glassy polymer in combination with high performance PIM‐1 allow for the preparation of metal–organic framework (MOF)‐based MMMs with superior separation properties and low aging rates under humid conditions, meeting the commercial target for post‐combustion CO2 capture. Soft helps hard: By utilizing a second, relative flexible polymer, in combination with rigid PIM‐1 microporous polymer, it was possible to manufacture a metal–organic framework‐based mixed matrix membranes with enhanced phase compatibility, and consequently the membrane separation performance and anti‐aging properties were improved simultaneously.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201803006