文献类型：期刊文献

英文题名：Densities, heat capacities and asymmetric criticality of coexistence curves for binary mixtures {dimethyl adipate + n-heptane or n-octane}

作者：Chen, Zhiyun[1]; Liu, Shixia[1]; Huang, Meijun[1]; Yin, Tianxiang[1]; Wang, Huanhuan[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 730000, China

年份：2013

卷号：42

期号：9

起止页码：1816

外文期刊名：Journal of Solution Chemistry

收录：EI(收录号：20242716641014)

语种：英文

外文关键词：Binary mixtures - Heptane

摘要：Densities of binary mixtures {x dimethyl adipate + (1 - x) n-heptane} and {x dimethyl adipate + (1 - x) n-octane} were measured at various temperatures. The excess molar volumes were calculated from the density data and fitted with the Redlich-Kister equation. The critical anomaly of density was detected for {x dimethyl adipate + (1 - x) n-octane} binary solutions with the critical compositions in a narrow temperature range of the near-critical one-phase region. However, the density anomaly and the excess properties were taken into account in a test of the complete scaling theory and found to be negligible. The isobaric heat capacities per unit volume of the {x dimethyl adipate + (1 - x) n-heptane} and {x dimethyl adipate + (1 - x) n-octane} binary solutions at the critical compositions were also determined over the temperature range both near and far away from the critical points. It was found that the heat capacity plays an important role in describing the asymmetry of the coexistence curves. ? 2013 Springer Science+Business Media New York.