Advanced Studies of Supported Amine Sorbents for CO ₂ Removal

Supported amines have been shown to absorb CO₂ cyclically under temperature swing absorption (TSA) conditions, and show a substantial decrease in desorption energy compared to zeolite materials. Supported amines may therefore be a viable alternative for cyclic capture of CO₂ on long-term space missions where minimal energy expenditure is a critical consideration. The research described in this paper presents efforts to improve the TSA-supported amine system with a focus on relationships between important parameters affecting cyclic CO₂ capacities, as well as reaction effects of CO₂ with the modified amine tetraethylenepentamine.