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Long-term stability of MFM-300(Al) towards toxic air pollutants

DOI: 10.1021/acsami.0c11134 DOI Help

Authors: Joseph H. Carter (University of Manchester; Diamond Light Source) , Christopher Morris (University of Manchester; Diamond Light Source) , Harry G. W. Godfrey (University of Manchester) , Sarah J. Day (Diamond Light Source) , Jonathan Potter (Diamond Light Source) , Stephen P. Thompson (Diamond Light Source) , Chiu C. Tang (Diamond Light Source) , Sihai Yang (University of Manchester) , Martin Schroeder (University of Manchester)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Acs Applied Materials & Interfaces

State: Published (Approved)
Published: August 2020
Diamond Proposal Number(s): 14555

Open Access Open Access

Abstract: Temperature or pressure-swing sorption in porous metal-organic framework (MOF) materials has been proposed for new gas separation technologies. The high tuneability of MOFs toward particular adsorbates and the relatively low energy penalty for system regeneration means that reversible physisorption in MOFs has the potential to create economic and environmental benefits compared with state-of-the-art chemisorption systems. However, for MOF-based sorbents to be commercialised they have to show long-term stability under the conditions imposed by the application. Here, we demonstrate the structural stability of MFM-300(Al) to the presence of a series of industrially-relevant toxic and corrosive gases, including SO2, NO2 and NH3, over four years using long duration synchrotron X-ray powder diffraction. Full structural analysis of gas-loaded MFM-300(Al) confirms the retention of these toxic gas molecules within the porous framework for up to 200 weeks, and cycling adsorption experiments verified the reusability of MFM-300(Al) for the capture of these toxic air pollutants.

Journal Keywords: Metal-organic frameworks; toxic gases, air pollution; flue gas desulfurization; NO2 abatement; ammonia storage; synchrotron x-ray powder diffraction

Subject Areas: Materials, Chemistry

Instruments: I11-High Resolution Powder Diffraction