Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 12, Issue 38, Pages 42949-42954Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c11134
Keywords
metal-organic frameworks; toxic gases; air pollution; flue gas desulfurization; NO2 abatement; ammonia storage; synchrotron X-ray powder diffraction
Funding
- EPSRC [EP/I011870]
- European Research Council (ERC) under the European Union [742401]
- Diamond Light Source
- EPSRC [EP/P001386/1] Funding Source: UKRI
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Temperature- or pressure-swing sorption in porous metal-organic framework (MOF) materials has been proposed for new gas separation technologies. The high tunability of MOFs toward particular adsorbates and the relatively low energy penalty for system regeneration indicate 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 commercialized, they have to show long-term stability under the conditions imposed by the application. Here, we demonstrate the structural stability of MFM-300(Al) in the presence of a series of industrially relevant toxic and corrosive gases, including SO2, NO2, and NH3, over 4 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.
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