Isobaric vapor-liquid equilibrium for binary systems of isoamyl acetate + isoamyl alcohol and isoamyl acetate + n-hexanol at 50.00 and 101.33 kPa

被引：1

作者：

Zhou F. ^{[1
]}

Chen C. ^{[1
]}

Xu C. ^{[1
]}

机构：

[1] State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin

来源：

Huagong Xuebao/CIESC Journal | 2017年 / 68卷 / 02期

关键词：

Isoamyl acetate; Isoamyl alcohol; N-hexanol; Thermodynamic model; Vapor-liquid equilibrium;

D O I：

10.11949/j.issn.0438-1157.20160924

中图分类号：

学科分类号：

摘要：

Isobaric vapor-liquid equilibrium data of the binary systems isoamyl acetate + isoamyl alcohol and isoamyl acetate + n-hexanol at 50.00 and 101.33 kPa were measured using a vapor-liquid equilibrium still. The isoamyl acetate + isoamyl alcohol system formed a minimum temperature azeotrope at 50.00 kPa. The thermodynamic consistency of the VLE experimental data were checked by Herington method, and the results were satisfied with Gibbs-Duhem's thermodynamic consistency. The experimental measurements for the binary systems were correlated by nonrandom two-liquid (NRTL), Wilson and universal quasichemical (UNIQUAC) activity coefficient models. Then, the corresponding parameters for the three models were obtained. Compared with the experimental data, the root-mean-square deviations of the boiling temperature and the vapor mole fraction calculated with the correlated parameters were less than 0.20 K and 0.0050, respectively. The calculated results showed that the experimental data agreed well with NRTL, Wilson and UNIQUAC models. Wilson activity coefficient model was used to predict the azeotropic phenomenon of isoamyl acetate + isoamyl alcohol, which indicated that the azeotrope would disappear at 98.4 kPa. This work provided important engineering data for chemical database and further study in the engineering design containing isoamyl acetate. © All Right Reserved.

引用

页码：560 / 566

页数：6

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