Abstract In the present study, equilibrium solubility of CO2 was studied in the aqueous blend of 2-(methylamino)ethanol (MAE) and aminoethylethanolamine (AEEA). Total concentration of blend solution, weight fraction of AEEA in aqueous (MAE+AEEA) blend, temperature, and partial pressure of CO2 was varied from 10 to 30 wt %, 0.10 to 0.30, 298.15 to 323.15 K, and 8.11 to 20.67 kPa, respectively. Maximum loading 0.944 mol CO2/mol amine was occurred at 298.15 K, 20.27 kPa of CO2 partial pressure, 10 wt % total concentration with 0.30 wt fraction AEEA. The Kent-Eisenberg thermodynamic model was modified by incorporating newly introduced correction factor (Fk) to predict CO2 solubility in the aqueous blend of MAE+AEEA. Experimental data and model predicted data was in good agreement with each other. In addition, heat of CO2 absorption was also calculated for this amine blend and reported as -73.43 kJ/mol.

中文翻译：

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平衡 CO2 在 MAE 和 AEEA 的水性混合物中的溶解度：实验研究和改进的热力学模型的发展

摘要 在本研究中，研究了 CO2 在 2-（甲基氨基）乙醇 (MAE) 和氨基乙基乙醇胺 (AEEA) 的水性混合物中的平衡溶解度。共混溶液的总浓度、含水 (MAE+AEEA) 共混物中 AEEA 的重量分数、温度和 CO2 分压从 10 到 30 重量％、0.10 到 0.30、298.15 到 323.15 K 和 8.11 到 20.67 kPa 不等，分别。最大负载 0.944 mol CO2/mol 胺发生在 298.15 K、20.27 kPa CO2 分压、10 wt% 总浓度和 0.30 wt 份 AEEA 时。Kent-Eisenberg 热力学模型通过引入新引入的校正因子 (Fk) 进行修改，以预测 MAE+AEEA 的水性混合物中的 CO2 溶解度。实验数据与模型预测数据吻合良好。此外，