文献类型：期刊文献

英文题名：VLE measurement of ternary system containing components of dimethyl oxalate, methanol and 1,2-butanediol under atmospheric pressure

作者：Shen, Rongchun[1];Chen, Yun[2];Zheng, Shi[2];Shi, Yunhai[2];Zhou, Jinghong[1];Li, Wei[2]

机构：[1]State Key Lab Chem Engn, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Res Ctr Chem Engn, Shanghai 200237, Peoples R China

年份：2025

卷号：20

外文期刊名：CHEMICAL THERMODYNAMICS AND THERMAL ANALYSIS

收录：WOS:【ESCI(收录号:WOS:001653492400009)】；

基金：This work was supported by Ministry of science and technology of the People's Republic of China, under the Research Fund for National Key R & D Program of China (2018YFB0604700) . And the master stu-dents, named Chen Huimin and Chen Guangyuan also contributed part of experimental works for this study.

语种：英文

外文关键词：Vapor-liquid equilibrium; Methanol; 1,2-Butanediol; NRTL activity coefficient model; Dimethyl oxalate

摘要：Isobaric vapor-liquid Equilibrium (VLE) data for dimethyl oxalate + methanol and methanol + 1,2-butanediol binary systems, as well as the VLE for dimethyl oxalate + methanol + 1,2-butanediol ternary system have been determined using an Ellis equilibrium distiller at 101.325 kPa. The vapor pressure of 1,2-butanol was measured with a Rose equilibrium apparatus under pressure of 0.34 kPa to atmospheric pressure. The thermodynamic consistency tests of the two binary experimental VLE data for dimethyl oxalate + methanol and methanol + 1,2-butanediol were performed according to a statistical method. The two binary experimental data were correlated by the Wilson, non-random two-liquid (NRTL) and universal quasi-chemical (UNIQUAC) activity coefficient models integrated in the authorized Aspen Plus software with the maximum average absolute deviations of 1.42 K for temperature and 0.0153 for vapor phase composition, the binary component interaction parameters were also obtained by this regression. On the basis of these calculated results, the corresponding binary interaction parameters of the dimethyl oxalate and 1,2-butanediol was then regressed from experimental ternary (dimethyl oxalate + methanol +1,2-butanediol) VLE data. These experimental and calculated data are valuable for the separation process design and optimization of dimethyl oxalate hydrogenation to ethylene glycol.