文献类型：期刊文献

英文题名：Critical Behavior of Binary Mixtures of Nitrobenzene plus n-Undecane and Nitrobenzene plus n-Dodecane

作者：Yin, Tian-Xiang[1];Lei, Yun-Tao[2];Huang, Mei-Jun[1];Chen, Zhi-Yun[1];An, Xue-Qin[1];Shen, Wei-Guo[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：2012

卷号：41

期号：10

起止页码：1866

外文期刊名：JOURNAL OF SOLUTION CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000312063300014)】；

基金：This work was supported by the National Natural Science Foundation of China (Projects 20973061, 21073063, and 21173080).

语种：英文

外文关键词：Critical phenomena; Turbidity; Heat capacity; Critical amplitude ratio; Complete scaling theory

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 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.