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DOE OSTI · 2439831

Supramolecular Complexation-Enhanced CO 2 Chemisorption in Amine-Derived Sorbents

Li, Errui·Li, Bo·Ganesan, Arvind·Qiu, Liqi·Jiang, De‐en·Mahurin, Shannon M.·Pramanik, Subhamay·Popovs, Ilja·Yang, Zhenzhen·Dai, Sheng
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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. Here, 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.

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRYAmine SorbentsCO2 ChemisorptionCarbamic AcidIntermolecular Proton TransferSupramolecular Complexation

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Li, Errui, Li, Bo, Ganesan, Arvind, Qiu, Liqi, Jiang, De‐en, Mahurin, Shannon M., Pramanik, Subhamay, Popovs, Ilja, Yang, Zhenzhen, Dai, Sheng. 2024-06-26. Supramolecular Complexation-Enhanced CO 2 Chemisorption in Amine-Derived Sorbents. https://doi.org/10.1002/chem.202402137

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