文献类型：期刊文献

英文题名：Asymmetric criticality of the osmotic compressibility in binary mixtures

作者：Yin, Tianxiang[1];Liu, Shixia[1];Xie, Jingjing[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：2013

卷号：138

期号：2

外文期刊名：JOURNAL OF CHEMICAL PHYSICS

收录：;EI(收录号：20130515948636);WOS:【SCI-EXPANDED(收录号:WOS:000313642500046)】；

基金：This work was supported by the National Natural Science Foundation of China (NNSFC) (Project Nos. 20973061 and 21173080).

语种：英文

外文关键词：Compressibility - Osmosis - Light scattering - Binary mixtures - Paraffins - Aromatic compounds

摘要：Heat capacities in the critical and the non-critical regions for {benzonitrile + tridecane} and {benzonitrile + pentadecane}, and light scattering for {benzonitrile + undecane}, {benzonitrile + dodecane}, {benzonitrile + tridecane}, {benzonitrile + tetradecane}, {benzonitrile + pentadecane}, and {benzonitrile + hexadecane} in the critical two-phase region were measured. Light scattering measurements confirmed the existence of the asymmetry for the osmotic compressibility while no such asymmetry was observed for the correlation length. An analysis of the osmotic compressibility asymmetry suggested the dominance of the singular term vertical bar Delta(T) over cap vertical bar(beta), which supports the complete scaling theory. The consistency of the complete scaling theory in descriptions of different asymmetry behaviors was also discussed. Moreover, it was found that the contribution of the heat capacity-related term is also important in describing the asymmetry of the osmotic compressibility as it was observed in studies of the diameters of the coexistence curves. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4770750]