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

被引:18
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
基金
中国国家自然科学基金;
关键词
Critical phenomena; Coexistence curve; Turbidity; Heat capacity; Crossover phenomena; Complete scaling theory; NONASYMPTOTIC CRITICAL-BEHAVIOR; FIELD CRITICAL-BEHAVIOR; CRITICAL-POINT; CRITICAL REGION; MEAN-FIELD; LIGHT-SCATTERING; FLUID MIXTURES; ISING-LIKE; CROSSOVER; DIAMETERS;
D O I
10.1016/j.jct.2010.12.002
中图分类号
O414.1 [热力学];
学科分类号
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.
引用
收藏
页码:656 / 663
页数:8
相关论文
共 48 条
[1]   Turbidity of critical solutions of polymethylmethacrylate in 3-octanone [J].
An, XQ ;
Shen, WG ;
Xia, KQ .
JOURNAL OF CHEMICAL PHYSICS, 1997, 107 (06) :2060-2065
[2]  
AN XQ, 1993, J CHEM THERMODYN, V25, P1373
[3]   Competition of mesoscales and crossover to theta-point tricriticality in near-critical polymer solutions [J].
Anisimov, MA ;
Kostko, AF ;
Sengers, JV ;
Yudin, IK .
JOURNAL OF CHEMICAL PHYSICS, 2005, 123 (16)
[4]   CROSSOVER APPROACH TO GLOBAL CRITICAL PHENOMENA IN FLUIDS [J].
ANISIMOV, MA ;
KISELEV, SB ;
SENGERS, JV ;
TANG, S .
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 1992, 188 (04) :487-525
[5]   NATURE OF CROSSOVER BETWEEN ISING-LIKE AND MEAN-FIELD CRITICAL-BEHAVIOR IN FLUIDS AND FLUID MIXTURES [J].
ANISIMOV, MA ;
POVODYREV, AA ;
KULIKOV, VD ;
SENGERS, JV .
PHYSICAL REVIEW LETTERS, 1995, 75 (17) :3146-3149
[6]   A NEW THEORETICAL CONSTRAINT ON THE STATIC CRITICAL-BEHAVIOR OF THE SPECIFIC-HEAT [J].
BAGNULS, C ;
BERVILLIER, C .
PHYSICS LETTERS A, 1985, 107 (07) :299-304
[7]   NONASYMPTOTIC CRITICAL-BEHAVIOR FROM FIELD-THEORY AT D=3 - THE DISORDERED-PHASE CASE [J].
BAGNULS, C ;
BERVILLIER, C .
PHYSICAL REVIEW B, 1985, 32 (11) :7209-7231
[8]   NONASYMPTOTIC CRITICAL-BEHAVIOR FROM FIELD-THEORY AT D = 3 .2. THE ORDERED-PHASE CASE [J].
BAGNULS, C ;
BERVILLIER, C ;
MEIRON, DI ;
NICKEL, BG .
PHYSICAL REVIEW B, 1987, 35 (07) :3585-3607
[9]   PRACTICAL METHOD FOR CALCULATION OF MULTIPLE LIGHT-SCATTERING [J].
BAILEY, AE ;
CANNELL, DS .
PHYSICAL REVIEW E, 1994, 50 (06) :4853-4864
[10]   Critical phenomena in microgravity: Past, present, and future [J].
Barmatz, M. ;
Hahn, Inseob ;
Lipa, J. A. ;
Duncan, R. V. .
REVIEWS OF MODERN PHYSICS, 2007, 79 (01) :1-52