A Corresponding-state Model for Predicting Surface Tension  

作　　者：WANGFeng-kun WUJiang-tao LIUZhi-gang 

机构地区：[1]StateKeyLaboratoryofMultiphaseFlowinPowerEngineering,Xi＇anJiaotongUniversity,Xi＇an710049,P.R.China [2]StateKeyLaboratoryofMultiphaseFlowinPowerEngineering,Xi＇anJiaotongUniversity,Xi＇an710049,P.R.China

出　　处：《Chemical Research in Chinese Universities》2005年第2期205-208,共4页高等学校化学研究（英文版）

基　　金：theNationalBasicResearchPrioritiesProgramofMinistryofScienceandTechnologyofChina(973Project,No.2001CB209208)andtheNationalNaturalScienceFoundationofChina(No.50306021).

摘　　要：A generalized corresponding-state model based on two reference fluids was developed for the prediction of surface tensions for non-polar and weakly polar pure fluids and their binary mixtures. Four parameters, p_c, T_c, V_c and ω, were used in this model, and the acentric factor ω was used as a scaling parameter. This model has been tested for 69 pure substances and 20 binary mixtures; the average absolute deviations are 0.28 and 0.20 mN/m, respectively. The results indicate that the predictions by means of this model were in good agreement with experimental data. In addition, the calculated deviation would increase with the excess surface tension rising, and if the excess surface tension is less than 3 mN/m, the prediction will be good and credible.A generalized corresponding-state model based on two reference fluids was developed for the prediction of surface tensions for non-polar and weakly polar pure fluids and their binary mixtures. Four parameters, p_c, T_c, V_c and ω, were used in this model, and the acentric factor ω was used as a scaling parameter. This model has been tested for 69 pure substances and 20 binary mixtures; the average absolute deviations are 0.28 and 0.20 mN/m, respectively. The results indicate that the predictions by means of this model were in good agreement with experimental data. In addition, the calculated deviation would increase with the excess surface tension rising, and if the excess surface tension is less than 3 mN/m, the prediction will be good and credible.

关 键 词：Corresponding-state Surface tension Binary mixtures 

分 类 号：O621.2[理学—有机化学]