In this lecture, I will describe the design and synthesis, characterization and application of new aminosilica materials that we have developed as cornerstones of new technologies for the removal of CO2 from dilute gas streams. These chemisorbents efficiently remove CO2 from simulated flue gas streams, and the CO2 capacities are actually enhanced by the presence of water, unlike in the case of physisorbents such as zeolites. Interestingly, the heat of adsorption for these sorbents is sufficiently high that the sorbents are also capable of capturing CO2 from extremely dilute gas streams, such as the ambient air. Indeed, our oxide-supported amine adsorbents are quite efficient at the direct “air capture” of CO2 and we may describe our investigations into development of “air capture” technologies as well.

Molecular scale and mesoscale structure-property relationships in amine-oxide hydrid materials for CO2 separations

254th National Meeting (2017)

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