物理化学学报 >> 1997, Vol. 13 >> Issue (08): 736-740.doi: 10.3866/PKU.WHXB19970811

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微扰理论状态方程预测高温高压电解质水溶液的密度

刘文彬,李以圭,陆九芳,李春喜   

  1. 清华大学化学工程系，北京 100084
  • 收稿日期:1996-11-04 修回日期:1997-04-16 发布日期:1997-08-15
  • 通讯作者: 李以圭

Eqution of State for Predicting Densities of Aqueous Electrolytes at High Pressure and Temperature by Perturbation Theory

Liu Wen-Bin,Li Yi-Gui,Lu Jiu-Fang;Li Chun-Xi   

  1. Department of Chemical Engineering,Tsinghua University,Beijing 100084
  • Received:1996-11-04 Revised:1997-04-16 Published:1997-08-15
  • Contact: Li Yi-Gui

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关键词: 微扰理论, 状态方程, 密度, 电解质水溶液

Abstract:

The equation of state for aqueous electrolytes based on perturbation theory is established. By using the water molecular parameters and Pauling diameters of canons and anions without any additional parameters, the densities of 9 aqueous electrolyte systems (NaCl, CaCl2,KCl, LiCl, BaCl2, MgCl2, NaBr, Na2SO4 and MgSO4) at high pressure and temperature are predicted. The predicted accuracy of densities is satisfactory. The accuracy can be improved by using the fitted canon diameter instead of Pauling diameters.

Key words: Perturbation theory, Equation of state, Density, Aqueous electrolytes