Methods for absorption and desorption of carbon dioxide

Abstract

According to embodiments disclosed herein, a method for absorption and desorption of CO2 may comprise absorbing CO2 onto an absorbent solution comprising a CO2-depleted amidoxime compound, wherein absorbing CO2 onto the absorbent solution comprising the CO2-depleted amidoxime compound may comprise contacting the absorbent solution with a gas comprising CO2 at a first temperature to form an absorbent solution comprising a CO2-enriched amidoxime compound; and then desorbing the CO2 from the absorbent solution comprising the CO2-enriched amidoxime compound, wherein desorbing the CO2 from the absorbent solution comprising the CO2-enriched amidoxime compound may comprise heating the absorbent solution comprising the CO2-enriched amidoxime compound to a second temperature greater than the first temperature to remove at least a portion of the CO2 from the CO2-enriched amidoxime compound and form the CO2-depleted amidoxime compound, wherein the second temperature is less than or equal to 80° C.

Dependencies are inferred from the claim text.