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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received July 28, 2005
Accepted September 27, 2005

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Chemical absorption of carbon dioxide with triethanolamine in non-aqueous solutions

Sang-Wook Park^† Byoung-Sik Choi Jae-Wook Lee¹

Division of Chemical Engineering, Pusan National University, Busan 609-735, Korea ¹Department of Chemical Engineering, Sogang University, Seoul 121-742, Korea

swpark@pusan.ac.kr

Korean Journal of Chemical Engineering, January 2006, 23(1), 138-143(6), 10.1007/BF02705705

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Abstract

Carbon dioxide was absorbed into non-aqueous solvents such as methanol, ethanol, n-propanol, n-butanol, ethylene glycol, propylene glycol, and propylene carbonate, and into water in a stirred semi-batch tank with a planar gas-liquid interface at 298 K and 101.3 kPa. Triethanoamine (TEA) was used as a reactant with carbon dioxide. The reaction rate constants of the reaction between carbon dioxide and TEA were estimated by the mass transfer mechanism, which was accompanied by a fast pseudo-first-order reaction. An empirical correlation between the reaction rate constants and the solubility parameter of the solvent is presented. In non-aqueous solutions of TEA, dissolved carbon dioxide is expected to react with solvated TEA to produce an ion pair.

Keywords

Carbon Dioxide Absorption Triethanolamine Non-aqueous Solutions

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