Amine-containing compounds are known to react with and absorb carbon dioxide. Several polyvinylamine (PVAm) solids were prepared and studied as absorbents for CO2 uptake. It was found that aerogels, which were prepared through freeze-drying of aqueous mixtures of PVAm and glutalaldehyde, had better performance, as opposed to a film or condensed solid material made of PVAm. Porous PVAm aerogels showed high CO2 absorption capacity when exposed to pure CO2 and air despite very low concentration of CO2 in air. These materials were tested for their ability to regenerate as determined in series of adsorption/desorption cycles. This study also includes temperature dependence of CO2 adsorption/desorption and effect of humidity on performance of absorbents.

Polyvinylamine based solid adsorbents for CO2 capture

251st National Meeting (2016)

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