A study on densities and excess volumes in the (γ-butyrolactone plus aromatic hydrocarbon) system at various temperatures

被引：15
|
作者：
Yang, Sheng-Kai [1 ]
Peng, San-Jun
Huang, Jian-Hua
Fan, Li-Qun
Yang, Feng-Xia
机构：
[1] Henan Inst Sci & Technol, Coll Chem & Chem Engn, Xinxiang 453003, Henan, Peoples R China
[2] Changsha Univ Sci & Technol, Coll Chem & Environm Engn, Changsha 410076, Hunan, Peoples R China
来源：
JOURNAL OF CHEMICAL THERMODYNAMICS | 2007年 / 39卷 / 05期
关键词：
gamma-butyrolactone; aromatic hydrocarbon; binary mixture; density; excess molar volume;
D O I：
10.1016/j.jct.2006.10.005
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Density of three binary mixtures formed by gamma-butyrolactone with benzene, or toluene, or ethylbenzene has been determined over the full range of compositions over the temperatures range (293.15 to 353.15) K and the local barometric pressure using a vibrating-tube densimeter. From these experiments, excess molar volumes (V-m(E)) have been calculated. It is found to be negative with a minimum at about the mole fraction of 0.5. Excess volumes were also fitted to a Redlich-Kister type equation. Our result shows V-m(E) decreases when temperature increases in the studied systems. (C) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：773 / 780
页数：8
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