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.
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Park, SW., Choi, BS. & Lee, JW. Chemical absorption of carbon dioxide with triethanolamine in non-aqueous solutions. Korean J. Chem. Eng. 23, 138–143 (2006). https://doi.org/10.1007/BF02705705
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DOI: https://doi.org/10.1007/BF02705705