Corresponding state principle based correlation for the surface tension of carboxylic acids

Surface Tension for Silanes, Refrigerants, and Carboxylic Acids: Simple Corresponding State Correlations versus DIPPR Data

“…However, the accuracy of the model in the low-temperature range, i.e., near the triple point, is not guaranteed. 13 , 14 , 16 , 27 − 29 In particular, Román et al 27 have shown that including the triple-point temperature as an input parameter significantly improves the accuracy of models for several thermodynamic properties along the vapor–liquid saturation curve, such as vaporization enthalpy and surface tension.…”

“…More recently, by introducing two novel reduced quantities, Yang et al 14 proposed a correlation specifically designed for carboxylic acid fluids as where σ( T max ) and σ( T min ) are the surface tension values at the maximum and minimum temperatures available for the acid in the DIPPR database, 33 T ma x and T min , respectively. The correlation can be used for different subfamilies of carboxylic acids and can describe the DIPPR data 33 with AAD < 2% for 20 out of 29 carboxylic acids and with AAD < 5% for all of them.…”

Corresponding-States Model for the Correlation and Prediction of the Surface Tension of Silanes

“…On the other hand, the most common semiempirical correlations used are those based on the corresponding-states principle, the chemical or physical group contributions, or the quantitative structure–property relationships. ,− Thus, models based on the corresponding-state principle show a possible universal behavior of different kinds of fluids. ,− Others are multiple-parameter correlations such as the van der Waals type model, the Weibull type model, and some others . The group contribution method has been used to study the properties of surface tension of alkanes, hydrocarbons, and ionic liquids, − etc.…”

“…If the n exponent is adequately determined, then the behavior of the surface tension in the range of high temperatures, i.e., near the critical point, can be reproduced. On the other hand, the accuracy of the model in the low-temperature range, i.e., near the triple point, is not guaranteed. ,− In particular, Román et al have shown that including the triple point temperature as an input parameter improves significantly the accuracy of models for several thermodynamic properties along the vapor–liquid saturation curve, such as the vaporization enthalpy and the surface tension.…”

“…Considering all these previous results, and taking as basis the recent proposals, ,, the main aim of this work is to propose a new corresponding-state model for the surface tension of silanes, which (i) is not based on the use of other properties of the fluids different from the temperature and surface tension values. (ii) It is obtained by using data for a few number of fluids.…”