Application of MIVM for phase equilibrium of Sn-Pb-Sb system in vacuum distillation

作者：Kong, Lingxin; Yang, Bin^*; Xu, Baoqiang; Li, Yifu; Liu, Dachun; Dai, Yongnian

来源：Fluid Phase Equilibria, 2014, 364: 1-5.

DOI：10.1016/j.fluid.2013.12.003

• Phase equilibrium
• Molecular interaction volume model (MIVM)
• Sn-Pb-Sb alloy
• Vacuum distillation

Based on the molecular interaction volume model (MIVM), the pair-potential energy parameters B-ij and B-ij of the related binary Sn-Pb, Pb-Sb and Sn-Sb alloy systems were calculated using the infinite dilution activity coefficients gamma(infinity)(i) and gamma(infinity)(j). The activities of components of the Sn-Pb-Sb ternary alloy system were predicted using B-ji and B-ij. Finally, the vapor-liquid phase equilibrium of the Sn-Pb-Sb alloy system was predicted using only the properties of pure components and the activity coefficients, which indicates that Sn can be separated from Pb and Sb by vacuum distillation thoroughly. A significant advantage of the model lies in its ability to predict the thermodynamic properties of multi-component liquid alloys using only two parameters. Moreover, the MIVM is reliable due to it has certain physical meaning from the viewpoint of statistical thermodynamics.

• 出版日期2014-2-25
• 单位昆明理工大学