文献类型：期刊文献

英文题名：Critical behavior of binary mixtures of nitrobenzene + n-undecane and nitrobenzene + n-dodecane

作者：Yin, Tian-Xiang[1]; Lei, Yun-Tao[2,3]; Huang, Mei-Jun[1]; Chen, Zhi-Yun[1]; An, Xue-Qin[1]; Shen, Wei-Guo[1,2]

机构：[1] School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China; [2] Department of Chemistry, Lanzhou University, Lanzhou 730000 Gansu, China; [3] Department of Basic Science, China Pharmaceutical University, Nanjing 210009 Jiangsu, China

年份：2012

卷号：41

期号：10

起止页码：1866

外文期刊名：Journal of Solution Chemistry

收录：EI(收录号：20242616451829)

语种：英文

外文关键词：Binary mixtures - Specific heat - Turbidity

摘要：Turbidities and isobaric heat capacities per unit volume, in a wide temperature range, have been measured for critical binary solutions of {nitrobenzene + n-undecane} and {nitrobenzene + n-dodecane}. The critical exponents and the system-dependent critical amplitudes were deduced. The non-critical and the critical-fluctuation induced contributions to the background heat capacities were determined. We also obtained the coupling constant $$ \bar{u} $$ by analyzing the coexistence curve data with crossover theory. These parameters were used to test some universal amplitude ratios and together with the coexistence-curve data to test the complete scaling theory. It is shown that the contribution from heat capacity plays an important role in describing the asymmetric criticality of the coexistence curve. ? 2012 Springer Science+Business Media New York.