Supramolecular Complexation‐Enhanced CO2 Chemisorption in Amine‐Derived Sorbents

Abstract A supramolecular complexation approach is developed to improve the CO 2 chemisorption performance of solvent‐lean amine sorbents. Operando spectroscopy techniques reveal the formation of carbamic acid in the presence of a crown ether. The reaction pathway is confirmed by theoretical simulation, in which the crown ether acts as a proton acceptor and shuttle to drive the formation and stabilization of carbamic acid. Improved CO 2 capacity and diminished energy consumption in sorbent regeneration are achieved.