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Instruments / Technical Area	Publication Details	Published	Actions
I11-High Resolution Powder Diffraction	Long-term stability of MFM-300(Al) towards toxic air pollutants Joseph H. Carter , Christopher Morris , Harry G. W. Godfrey , Sarah J. Day , Jonathan Potter , Stephen P. Thompson , Chiu C. Tang , Sihai Yang , Martin Schroeder Acs Applied Materials & Interfaces DOI: 10.1021/acsami.0c11134 Diamond Proposal Number(s): [14555] Open Access Show Abstract ▼ 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.	Aug 2020
I11-High Resolution Powder Diffraction	The properties of methane clathrate in the presence of ammonium sulphate solutions with relevance to Titan Emmal Safi , Stephen P. Thompson , Aneurin Evans , Sarah J. Day , Claire A. Murray , Annabelle R. Baker , Joana M. Oliveira , Jaco Th. Van Loon EPSC-DPS Joint Meeting 2019 Show Abstract ▼ Abstract: The source of atmospheric methane on Saturn’s satellite Titan is currently unknown. However, one possibility is that it originates from clathrate hydrates formed below the surface. Titan’s sub-surface ocean is believed to be composed of saline, rather than pure, water and in situ experimental data on clathrate formation under these conditions are largely absent in literature. Here, synchrotron X-ray powder diﬀraction (SXRPD) is used to study the properties of methane clathrate hydrates formed in the presence of ammonium sulphate solutions under low temperature conditions with a pressure of 26 bar.	Sep 2019

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