In this work, the liquid–liquid equilibrium (LLE) in the systems 1-propanol–1-propyl formate–deep eutectic solvent (DES) and 1-propanol–1-propyl propionate–DES at 293.15 and 313.15 K and atmospheric pressure was investigated. Three DESs were selected for this study: choline chloride (ChCl)/glycerol (Gl), ChCl/ethylene glycol (EG), and ChCl/propylene glycol (PG). Quantitative analysis of coexisting equilibrium phases was carried out using proton nuclear magnetic resonance spectroscopy. The efficiency of separation of the systems 1-propanol–1-propyl formate and 1-propanol–1-propyl propionate using these DESs was evaluated by calculating the distribution coefficients and selectivity values. A comparative analysis of the selectivity values obtained in the work was carried out with data for other alcohol–ester systems and with other DESs presented in the literature. The accuracy of the experiment’s measurements was confirmed by the convergence of the obtained experimental data with calculations based on the non-random two-liquid equation (NRTL).

中文翻译：

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使用基于氯化胆碱的低共熔溶剂从丙醇中分离丙酸丙酯和甲酸丙酯的新实验结果和比较分析

在这项工作中，1-丙醇-1-甲酸丙酯-低共熔溶剂 (DES) 和 1-丙醇-1-丙酸丙酯-DES 体系在 293.15 和 313.15 K 和大气压下的液液平衡 (LLE) 为调查了。本研究选择了三种 DES：氯化胆碱 (ChCl)/甘油 (GI)、ChCl/乙二醇 (EG) 和 ChCl/丙二醇 (PG)。使用质子核磁共振波谱法对共存平衡相进行定量分析。通过计算分配系数和选择性值来评估使用这些 DES 分离 1-丙醇-1-丙酸丙酯和 1-丙醇-1-丙酸丙酯系统的效率。对工作中获得的选择性值与其他醇-酯系统和文献中提出的其他 DES 的数据进行了比较分析。所获得的实验数据与基于非随机二液方程（NRTL）的计算的收敛性证实了实验测量的准确性。