文献类型：期刊文献

英文题名：The measurements of coexistence curves and light scattering for {xC6H5CN + (1 - x)CH3(CH2)6CH3} in the critical region

作者：Wang, Jinshou[1]; An, Xueqin[1,3]; Wang, Nong[1,2]; Lv, Hekun[1]; Chai, Shouning[1]; Shen, Weiguo[1,2]

机构：[1] Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China; [2] Department of Chemistry, East China University of Science and Technology, Shanghai 2002237, China; [3] College of Chemistry and Environment Science, Nanjing Normal University, Nanjing, 210097, China

年份：2008

卷号：40

期号：12

起止页码：1638

外文期刊名：Journal of Chemical Thermodynamics

收录：EI(收录号：20084711727715)

语种：英文

外文关键词：Aromatic compounds - Mean square error - Mean field theory - Paraffins

摘要：The coexistence curves and light scattering data for a critical solution of (benzonitrile + octane) have been reported. The critical exponents relating to the difference in the density variables between two coexisting phases β, the osmotic compressibility γ, and the correlation length ν have been deduced and the values are consistent with the 3D-Ising value in the range close to the critical point. The experimental results of the coexistence curves have also been analyzed to examine the Wegner correction terms and the behavior of the diameter of the coexistence curves. The light scattering data are well described by the crossover model proposed by Anisimov and Sengers, and show a monotonic crossover of the critical exponents γ and ν from its 3D-Ising value to the mean-field value as the temperature departures from the critical point. Furthermore, the dependences of the critical amplitudes on the mass of n-alkane for the binary solutions of (benzonitrile + n-alkane) have been discussed. ? 2008 Elsevier Ltd. All rights reserved.