Webinar: The effect of outgassing temperature on H2O & CO2 adsorption performance of MOFs & Zeolites
298 Views •Webinar: Aqueous and Gaseous Phase Characterization of Catalysts for the Carbon Dioxide Hydration Reaction
335 Views •Webinar: Capture of Hydrogen Sulphide and Sulphur Dioxide in MOFs
592 Views •Webinar: Water Sorption and Gas Adsorption Measurements on MOFs
556 Views •Seminario web: Métodos experimentales para la captura de CO2 en presencia de vapor de agua
2928 Views •Webinar: Particle Engineering in Pharmaceutical Solids Processing
3807 Views •Seminario web: Métodos experimentales para la captura de CO2 en presencia de vapor de agua
2928 Views •Workshop: Sorption Science Innovations in Cellulosic Material Characterization
2800 Views •Webinar: Challenges on specific surface area analysis of cellulosic materials
2525 Views •Webinar: Study of particle cohesion/adhesion and wettability of powders and formulations | Prof. Williams
2501 Views •Particle Engineering in Pharmaceutical Solids Processing
1838 Views •Online Workshop: Application of sorption science in food research
1733 Views •Webinar: Understanding Isotherm Shape and Isotherm Modelling from DVS Experiments | Dr. Daniel J. Burnett
1489 Views •Webinar: The Effect of Surface Properties on Granulation Performance
1421 Views •Webinar: The Importance of Moisture in Pharmaceuticals and Food Materials by Surface Energy
1297 Views •Webinar: Surface energy analysis for measuring physicochemical properties of materials
1049 Views •Webinar: Analysis of Food Products by Dynamic Vapour Sorption
956 Views •Webinar: The Surface Properties and Water Adsorption Behaviour of Hair Fibers
921 Views •Webinar: Polymer characterization by Vapor Sorption Methods with Dr. Daniel Burnett
670 Views •Webinar: Capture of Hydrogen Sulphide and Sulphur Dioxide in MOFs
592 Views •Webinar: Water Sorption and Gas Adsorption Measurements on MOFs
556 Views •Webinar: Battery Electrode Active Materials Characterization
481 Views •Webinar: Experimental Methods for Determining Carbon Dioxide Capture in the Presence of Water Vapor
459 Views •Webinar: Analysis of Wood and Building Materials using Dynamic Vapour Sorption
448 Views •Dynamic Vapor Sorption (DVS) Applications for Amorphous Content Calculations & in situ Raman studies
445 Views •Webinar: Capture of Hydrogen Sulphide and Sulphur Dioxide in MOFs
Dr. Ilich A. Ibarra
Associate Professor
Instituto de Investigaciones en Materiales, UNAM,
Circuito exterior Ciudad Universitaria C.P. 04510, Ciudad de México
Abstract:
Hydrogen sulphide (H2S) is a harmful chemical present in natural gas, biogas and emitted by different chemical industries, e.g., oil desulfurization process at oil refineries. H2S is considered as a major air pollutant due to its negative environmental impact, mainly associated with acid rain, and to high toxicity to humans leading to severe nervous system illnesses.
On the other hand, sulphur dioxide (SO2) considered as one of the most hazardous chemicals is a colourless, non-flammable gas with a strong odour. SO2 provokes severe health issues including alterations of the respiratory system (e.g., broncho-constriction in lung function). Typically, an exposure to only 1.5 ppm of SO2 for a few minutes can cause a temporary incapability to breath normally. Moreover, this
chemical is highly soluble in water and forms sulphurous acid further converted to sulfuric acid, the main component of acid rain which can damage plants, accelerate the corrosion of metals and attack limestone, marble, mortar, etc. The harmful impact of this pollutant present in the atmosphere is also catastrophic in terms of global warming, ozone depletion and climate change.
Metal-Organic Frameworks (MOF) have been envisaged for the capture of H2S and SO2 however, some of them, with the main disadvantage of showing poor chemical stability. Thus, in this talk we present two MOF materials highly chemically-stable to H2S and SO2: MIL-53(Al)-TDC7 and MFM-300(Sc), respectively.
MIL-53(Al)-TDC is demonstrated to exhibit one of the highest H2S capture (18.5 mmol g-1 at 298 K and 1 bar) ever reported for a MOF, to the best of our knowledge, along with the retention of its crystalline structure after multiple H2S adsorption/desorption cycles and an excellent regeneration at relatively low temperature. MFM-300(Sc) is demonstrated to exhibit a SO2 uptake of 9.4 mmol g-1 at 298 K and 1 bar significantly higher compared to its Al- and In-analogues, along with the retention of this level of performance after multiple SO2 adsorption/desorption cycles owing to the high stability of its crystalline structure. Advanced experimental and computational tools have been further coupled to gain insight into
the molecular mechanisms responsible for the adsorption of H2S and SO2.
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