文献类型：期刊文献

英文题名：(Liquid plus liquid) phase equilibrium and critical behavior of binary solution {heavy water+2,6-dimethylpyridine}

作者：Xu, Chen[1];Chai, Shouning[2];Yin, Tianxiang[1];Chen, Zhiyun[1];Shen, Weiguo[1,2]

机构：[1]E China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]Lanzhou Univ, Dept Chem, Lanzhou 730000, Gansu, Peoples R China

年份：2015

卷号：88

起止页码：101

外文期刊名：JOURNAL OF CHEMICAL THERMODYNAMICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000355153800014)】；

基金：This work was supported by the National Natural Science Foundation of China (Projects 21173080, 21373085, 21303055 and 21403067).

语种：英文

外文关键词：Heat capacity; Turbidity; Complete scaling theory; Asymmetric coefficient; Universal amplitude ratios; Deuterium effect

摘要：The (liquid + liquid) coexistence curves, the isobaric heat capacities per unit volume and the turbidities for the binary solution of {heavy water + 2,6-dimethylpyridine} have been precisely measured. The values of the critical exponents were obtained, which confirmed the 3D-Ising universality. It was found that the critical temperature dropped by 5.9 K and the critical amplitude of the coexistence curve significantly increased as compared to the binary solution of {water + 2,6-dimethylpyridine}. The complete scaling theory was applied to well describe the asymmetric behavior of the diameter of the coexistence curve as the heat capacity contribution was considered. Moreover, the values of the critical amplitudes of the correlation length and the osmotic compressibility were deduced, which together with the critical amplitudes of the coexistence curve and the heat capacity to test universal amplitude ratios. (C) 2015 Elsevier Ltd. All rights reserved.