SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2015, Vol. 23 ›› Issue (8): 1374-1383.DOI: 10.1016/j.cjche.2015.04.014

• CHEMICAL ENGINEERING THERMODYNAMICS • Previous Articles     Next Articles

LSER-based modeling vapor pressures of (solvent + salt) systems by application of Xiang-Tan equation

Aynur Senol   

  1. Department of Chemical Engineering, Faculty of Engineering, Istanbul University, Istanbul 34320, Turkey
  • Received:2015-01-23 Revised:2015-04-08 Online:2015-09-26 Published:2015-08-28
  • Contact: Aynur Senol
  • Supported by:

    The author is grateful to the Research Fund of Istanbul University for the technical support of this study. Project number 33167.

LSER-based modeling vapor pressures of (solvent + salt) systems by application of Xiang-Tan equation

Aynur Senol   

  1. Department of Chemical Engineering, Faculty of Engineering, Istanbul University, Istanbul 34320, Turkey
  • 通讯作者: Aynur Senol
  • 基金资助:

    The author is grateful to the Research Fund of Istanbul University for the technical support of this study. Project number 33167.

Abstract: The study deals with modeling the vapor pressures of (solvent+salt) systems depending on the linear solvation energy relation (LSER) principles. The LSER-based vapor pressure model clarifies the simultaneous impact of the vapor pressure of a pure solvent estimated by the Xiang-Tan equation, the solubility and solvatochromic parameters of the solvent and the physical properties of the ionic salt. It has been performed independently two structural forms of the generalized solvation model, i.e. the unified solvation model with the integrated properties (USMIP) containing nine physical descriptors and the reduced property-basis solvation model. The vapor pressure data of fourteen (solvent+salt) systems have been processed to analyze statistically the reliability of existing models in terms of a log-ratio objective function. The proposed vapor pressure approaches reproduce the observed performance relatively accurately, yielding the overall design factors of 1.0643 and 1.0702 for the integrated property-basis and reduced property-basis solvation models.

Key words: Vapor pressure, Salt effect, Modeling, LSER, Statistical analysis

摘要: The study deals with modeling the vapor pressures of (solvent+salt) systems depending on the linear solvation energy relation (LSER) principles. The LSER-based vapor pressure model clarifies the simultaneous impact of the vapor pressure of a pure solvent estimated by the Xiang-Tan equation, the solubility and solvatochromic parameters of the solvent and the physical properties of the ionic salt. It has been performed independently two structural forms of the generalized solvation model, i.e. the unified solvation model with the integrated properties (USMIP) containing nine physical descriptors and the reduced property-basis solvation model. The vapor pressure data of fourteen (solvent+salt) systems have been processed to analyze statistically the reliability of existing models in terms of a log-ratio objective function. The proposed vapor pressure approaches reproduce the observed performance relatively accurately, yielding the overall design factors of 1.0643 and 1.0702 for the integrated property-basis and reduced property-basis solvation models.

关键词: Vapor pressure, Salt effect, Modeling, LSER, Statistical analysis