Proton Transfer Step in the Carbon Dioxide Capture by Monoethanol Amine: A Theoretical Study at the Molecular Level

J. Phys. Chem. B, 2012, 116 (7), pp 2244–2248

Proton Transfer Step in the Carbon Dioxide Capture by Monoethanol Amine: A Theoretical Study at the Molecular Level

Kenji Iida and Hirofumi Sato*

hirofumi@moleng.kyoto-u.ac.jp

Department of Molecular Engineering, Kyoto University, Kyoto, 615-8510, Japan

Abstract

Researchers used an aqueous solution of monoethanol amine (MEA) in an industrial process of CO2 absorption. The chemical reaction between CO2 and MEA, which is employed in the process, consists of two steps.

After the formation of the MEA–CO2 complex (“capture”), a proton transfers from the complex to give a final product.  Researchers discuss the overall mechanism of the reaction, focusing on the proton transfer step.

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