Revisiting the Aluminum Trimesate-Based MOF (MIL-96)

From Structure Determination to the Processing of Mixed Matrix Membranes for CO2 Capture

Journal Article (2017)
ChemE/Catalysis Engineering
Copyright
© 2017 Marvin Benzaqui, Renjith S. Pillai, A. Sabetghadam, Virginie Benoit, Perine Normand, Jérôme Marrot, Nicolas Menguy, David Montero, William Shepard, Antoine Tissot, Charlotte Martineau-Corcos, Clémence Sicard, Mihail Mihaylov, Florent Carn, Isabelle Beurroies, Philip L. Llewellyn, Guy De Weireld, Konstantin Hadjiivanov, Jorge Gascon, F. Kapteijn, Guillaume Maurin, Nathalie Steunou, Christian Serre
DOI related publication
https://doi.org/10.1021/acs.chemmater.7b03203
More Info
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Publication Year
2017
Language
English
Copyright
© 2017 Marvin Benzaqui, Renjith S. Pillai, A. Sabetghadam, Virginie Benoit, Perine Normand, Jérôme Marrot, Nicolas Menguy, David Montero, William Shepard, Antoine Tissot, Charlotte Martineau-Corcos, Clémence Sicard, Mihail Mihaylov, Florent Carn, Isabelle Beurroies, Philip L. Llewellyn, Guy De Weireld, Konstantin Hadjiivanov, Jorge Gascon, F. Kapteijn, Guillaume Maurin, Nathalie Steunou, Christian Serre
ChemE/Catalysis Engineering
Issue number
24
Volume number
29
Pages (from-to)
10326-10338
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Abstract

A microporous Al trimesate-based metal-organic framework (MOF), denoted MIL-96-(Al), was selected as a porous hybrid filler for the processing of mixed matrix membranes (MMMs) for CO2/N2 postcombustion separation. First, the structural model of MIL-96-(Al) initially reported was revisited using a combination of synchrotron-based single-crystal X-ray diffraction, solid-state nuclear magnetic resonance spectroscopy, and density functional theory (DFT) calculations. In a second step, pure MIL-96-(Al) crystals differing by their size and aspect ratio, including anisotropic hexagonal platelets and nanoparticles of about 70 nm in diameter, were prepared. Then, a combination of in situ IR spectroscopy, single-gas, and CO2/N2 coadsorption experiments, calorimetry, and molecular simulations revealed that MIL-96-(Al) nanoparticles show a relatively high CO2 affinity over N2 owing to strong interactions between CO2 molecules and several adsorption sites such as Al3+ Lewis centers, coordinated water, and hydroxyl groups. Finally, the high compatibility between MIL-96-(Al) nanoparticles and the 6FDA-DAM polymer allowed the processing of homogeneous and defect-free MMMs with a high MOF loading (up to 25 wt %) that outperform pure polymer membranes for CO2/N2 separation.

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