文献类型：期刊文献

英文题名：Heat capacities and asymmetric criticality of coexistence curves for benzonitrile + alkanes and dimethyl carbonate + alkanes

作者：Huang, Meijun[1]; Lei, Yuntao[2,3]; Yin, Tianxiang[1]; Chen, Zhiyun[1]; An, Xueqin[1]; Shen, Weiguo[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, Gansu 730000, China; [3] Department of Basic Science, China Pharmaceutical University, Nanjing, Jiangsu 210009, 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：EI(收录号：20114714548135)

语种：英文

外文关键词：Criticality (nuclear fission) - Paraffins - Aromatic compounds

摘要：The critical behavior of isobaric heat capacities per unit 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. ? 2011 American Chemical Society.