文献类型：期刊文献

英文题名：Heat Capacities and Asymmetric Criticality of Coexistence Curves for Benzonitrile plus Alkanes and Dimethyl Carbonate plus Alkanes

作者：Huang, Meijun[1];Lei, Yuntao[2];Yin, Tianxiang[1];Chen, Zhiyun[1];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：115

期号：46

起止页码：13608

外文期刊名：JOURNAL OF PHYSICAL CHEMISTRY B

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000297000800022)】；

基金：This work was supported by the National Natural Science Foundation of China (Projects 20973061, 21073063, and 21173080), the Chinese Ministry of Education (Key Project 105074), and the Committee of Science and Technology of Shanghai (Project 0652 nm010, 08JC1408100).

语种：英文

摘要：The critical behavior of isobaric heat capacities per tat volume for a series of critical binary solutions {benzonitrile + octane, or dodecane, or hexadecane} and {dimethyl carbonate + nonane, or decane, or dodecane} were studied. The corresponding exponent was obtained to be in consistent with the 3D-Ising value. The amplitudes in one-phase and two-phase regions were deduced, which were used to test some critical amplitude ratios. Analysis of the dependence of the effective critical exponent of the heat capacity on the temperature indicated a critical crossover from the 3D-Ising to the mean-field for all the studied systems. It was found that the heat capacity does play an important role for describing the asymmetric criticality of coexistence curves by the complete scaling theory.