In this work, the equilibrium CO₂ solubilities of the aqueous N-(2-hydroxyethyl) pyrrolidine (N-(2-HE) PRLD) at different concentrations (1.0 mol/L–5.0 mol/L) were measured at different temperatures (298 K–333 K) and pressures (8 kPa–101 kPa), using a vapor–liquid equilibrium apparatus. Four semi-empirical thermodynamic models (C_f model, Kent–Eisenberg model, Hu–Chakma model and Li–Shen model) were used to correlate and predict the CO₂ solubility data of the N-(2-HE) PRLD-CO₂–H₂O system. The results showed that the Hu–Chakma model, which is one of the models that incorporates the effect of amine concentration and CO₂ loading, and accounted for nonideality caused by higher temperature, species concentrations and CO₂ loadings, was best able to predict results that are in agreement with the experimental vapor–liquid equilibrium measurements in this work.

在这项工作中，在不同温度（1.0 mol / L–5.0 mol / L）下，测量了不同浓度（1.0 mol / L–5.0 mol / L）的N-（2-羟乙基）吡咯烷水溶液（N-（2-HE）PRLD）的平衡CO ₂溶解度（ 298 K–333 K）和压力（8 kPa–101 kPa），使用气液平衡仪。使用四个半经验热力学模型（C _f模型，Kent-Eisenberg模型，Hu-Chakma模型和Li-Shen模型）来关联和预测N-（2-HE）PRLD-CO ₂的CO ₂溶解度数据–H ₂ O系统。结果表明，Hu–Chakma模型是结合了胺浓度和CO ₂影响的模型之一。负载，并考虑到较高的温度，物种浓度和CO ₂负载导致的非理想性，最能够预测与这项工作中的实验气液平衡测量结果相符的结果。