In this work, the effects of N-methyl pyrrolidone, N,N-dimethylformamide, cyclohexanol, butyl butyrate, and N-formylmorpholine on the separation efficiency of a p-xylene and 1-pentanol azeotropic system are investigated, and the best solvent is selected from these solvents. The vapor–liquid equilibrium data of binary systems of 1-pentanol + butyl butyrate, 1-pentanol + N-formylmorpholine, and p-xylene + butyl butyrate are measured using a modified Rose-type circulating still under 101.3 kPa. In order to check the thermodynamic consistency of the experimental vapor–liquid equilibrium data, the Herington and Van Ness methods are used. In addition, the nonrandom two-liquid, universal quasichemical, and Wilson models are used to correlate the experimental data of binary systems, and the interaction parameters of binary systems are obtained.

中文翻译：

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1-戊醇 + 丁酸丁酯、1-戊醇 + N -甲酰基吗啉和对二甲苯 + 丁酸丁酯的二元系统在 101.3 kPa 下的等压蒸气-液体平衡

本工作研究了N-甲基吡咯烷酮、N , N-二甲基甲酰胺、环己醇、丁酸丁酯和N-甲酰基吗啉对对二甲苯和1-戊醇共沸体系分离效率的影响，最佳溶剂为选自这些溶剂。1-戊醇+丁酸丁酯、1-戊醇+ N-甲酰基吗啉和p二元体系的汽液平衡数据-二甲苯 + 丁酸丁酯使用仍在 101.3 kPa 下的改良 Rose 型循环进行测量。为了检查实验汽液平衡数据的热力学一致性，使用了 Herington 和 Van Ness 方法。此外，利用非随机二液模型、通用准化学模型和Wilson模型对二元系统的实验数据进行关联，得到二元系统的相互作用参数。