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《中国化学工程学报(英文版)》 2001-01
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A Surface Tension Model for Liquid Mixtures Based on NRTL Equation

LI Chunxi WANG WenchuanCollege of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China  
A new equation for predicting surface tension is proposed based on the thermodynamic definition of surface tension and the expression of the Gibbs free energy of the system. Using the NRTL equation to represent the excess Gibbs free energy, a two-parameter surface tension equation is derived. The feasibility of the new equation has been tested in terms of 124 binary and 16 multicomponent systems(13-ternary and 3-quaternary) with absolute relative deviations of 0.59% and 1.55% respectively. This model is also predictive for the temperature dependence of surface tension of liquid mixtures. It is shown that, with good accuracy, this equation is simple and reliable for practical use.
【Fund】: the Scientific Research Foundation of the State Education Ministry for Returned Overseas Chinese Scholar.
【CateGory Index】: O647
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【Co-references】
Chinese Journal Full-text Database 10 Hits
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