文献类型：期刊文献

英文题名：Isobaric Vapor–Liquid Equilibrium for Binary System of N-Methyl-2-pyrrolidone + γ-Butyrolactone at 10.0, 20.0, and 101.3 kPa

作者：He, Long[1]; Qin, Lei[2]; Chen, Liang[2]; Chen, Lifang[1]; Qi, Zhiwen[1]

机构：[1] State Key Laboratory of Chemical Engineering and Low-Carbon Technology, School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China; [2] State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, SINOPEC Shanghai Research Institute of Petrochemical Technology Co., Ltd., Shanghai, 201208, China

年份：2026

卷号：71

期号：7

起止页码：2977

外文期刊名：Journal of Chemical and Engineering Data

收录：EI(收录号：20262821088093);Scopus(收录号：2-s2.0-105044310197)

语种：英文

外文关键词：Binary mixtures - Phase equilibria - Thermodynamic properties - Wide band gap semiconductors

摘要：The removal of γ-butyrolactone (GBL) from N-methyl-2-pyrrolidone (NMP) to produce electronic-grade NMP is a significant challenge to meet the rigorous purity standards of semiconductor manufacturing. Therefore, reliable thermodynamic data and models are essential for designing an intensified separation process. Herein, isobaric vapor–liquid equilibrium (VLE) data for the {NMP + GBL} binary system at 10.0, 20.0, and 101.3 kPa were determined by a Fischer Labodest VLE 602 ebulliometer. The results show that the {NMP + GBL} system is a close-boiling nonazeotropic mixture over the investigated pressure ranges. To verify the reliability of the experimental data, Herington area and Van Ness point tests used to determine the thermodynamic consistency of VLE data illustrate that all of the data have passed the test. In addition, the VLE data measured in the experiment are correlated with nonrandom two-liquid (NRTL), Wilson, and UNIQUAC activity coefficient models, and all three models show good agreement with the experimental data for this binary system. This study provides essential thermodynamic data and model parameters to support the development of purification processes for electronic-grade NMP. ? 2026 American Chemical Society