Sorption of H2S and SO2 in MOFs: safe in situ experiments in new reversible systems

Hydrogen sulfide and sulfur dioxide are harmful pollutants commonly emitted by various industrial processes. Their efficient removal from air and exhaust gases is therefore crucial to meet environmental regulations and prevent environmental and health hazards. However, until now, experimental studies aiming at understanding the underlying adsorption mechanisms by means of X-ray diffraction (XRD) are lacking, and current knowledge mostly relies on simulations and spectroscopic data. In this proposal, we aim at investigating the sorption mechanisms of H2S and SO2 in several MOF systems, inside the safe and confined environment of a sealed capillary, avoiding the use of potential hazardous setups containing large amount of those gases. These experiments should enable to localize the gas molecules inside the MOF frameworks, to determine the occurrence of potential framework degradation and to measure adsorption isobars by varying the temperature of the sample contained in the capillary.