Characterization and stability of a new, high-capacity amine-functionalized CO₂ sorbent

Solid sorbents have received extensive research as an alternative to aqueous amine scrubbing to remove CO₂ from gas streams due to their theoretically lower energy requirements. Amine-functionalized sorbents are among the solid sorbents with the highest CO₂ capacity. In this study, a recently developed amine-functionalized sorbent with a high capacity for CO₂ is characterized using multiple techniques, including ¹³C NMR. These characterizations show that the sorbent is thermally stable up to 200°C and is stable when used up to ten sorption-desorption cycles.