文献类型：期刊文献

英文题名：Critical behavior of binary mixture of {x C₆H₅CN+(1-x) CH₃(CH₂)₁₂CH₃}: Measurements of coexistence curves, turbidity, and heat capacity

作者：Yin, Tianxiang[1];Lei, Yuntao[2];Huang, Meijun[1];Chen, Zhiyun[1];Mao, Chunfeng[2];An, Xueqin[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：2011

卷号：43

期号：5

起止页码：656

外文期刊名：JOURNAL OF CHEMICAL THERMODYNAMICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000288726600004)】；

基金：This work was supported by the National Natural Science Foundation of China (Projects 20973061 and 21073063), the Chinese Ministry of Education (Key Project 105074) and Committee of Science and Technology of Shanghai (Projects 0652nm010 and 08jc1408100).

语种：英文

外文关键词：Critical phenomena; Coexistence curve; Turbidity; Heat capacity; Crossover phenomena; Complete scaling theory

摘要：(Liquid + liquid) coexistence curve, turbidity, and isobaric heat capacity per unit volume for the critical solution of {benzonitrile + n-tetradecane} have been measured. The critical exponents beta, nu, gamma, and alpha and system-dependent critical amplitudes B, zeta(0), chi(0), and A(+/-), corresponding to the difference of the general density variable of two coexisting phases Delta rho, the correlation length zeta, the osmotic compressibility chi, and the isobaric heat capacity per unit volume CpV-1, have been deduced and were used to test some universal ratios. The behavior of the diameter of the coexistence curves showed good agreement with the complete scaling theory. The analysis of effective critical exponent beta(eff), which was well described by the crossover model proposed by Anisimov and Sengers, and effective critical exponent alpha(eff) indicated monotonic crossover phenomena from 3D-Ising behavior to mean-field one as the temperature departed from the critical point. (C) 2010 Elsevier Ltd. All rights reserved.