Novel liquid-like nanomaterials, called Nanoparticle Organic Hybrid Materials (NOHMs), were synthesized by grafting a nanosized inorganic core with a polymeric canopy. These materials, owing to their negligible vapor pressure and high thermal stability, have appeared as alternative CO2 capture media to the common amine-based solvents. Prior studies have provided insights into the mechanisms of CO2 capture in NOHMs with evidence of both enthalpic and entropic contributions. Aside from the CO2 capture capacity, there are a number of aspects to investigate when considering CO2 removal technologies, as for instance the effect of other flue gas components (e.g., H2O and SO2) or the effect of materials' structure. In fact, several other anhydrous CO2 capture solvents degrade or exhibit lower capacities when exposed to H2O and/or SO2 or they do not have the chemical and physical features allowing sufficient thermal stability for their large-scale implementation. This study was therefore conducted to investigate the effect of flue gas components on the properties of NOHMs relevant to CO2 capture, such as thermal stability, viscosity, density, swelling and CO2 capture capacity. The effect of the NOHMs' structure on these properties as well as CO2 diffusion was also evaluated. Overall, this study provides fundamental insights on the effect of the physical and chemical properties of NOHMs at the nanoscale and highlights their impact on the potential deployment of a NOHMs-based system for CO2 capture.

Investigation of the tunable physical and chemical properties of novel solvents based on hybrid nanomaterials for CO<sub>2</sub> capture

246th National Meeting (2013)

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Investigation of the tunable physical and chemical properties of novel solvents based on hybrid nanomaterials for CO2 capture

Investigation of the tunable physical and chemical properties of novel solvents based on hybrid nanomaterials for CO₂ capture