Institute of Experimental Physics I, Faculty of Physics and Geosciences, University of Leipzig, 5 Linnéstrasse, D-04103 Leipzig, Germany.
J Colloid Interface Sci. 2010 Dec 15;352(2):504-11. doi: 10.1016/j.jcis.2010.08.046. Epub 2010 Aug 19.
Prediction of adsorption equilibria for ternary liquid mixtures on solid surfaces by means of adsorption data for the corresponding three binary liquid mixtures can be improved by combining the thermodynamic excess formalism with geometrical models. This new strategy for the prediction of excess adsorption isotherms is examined for four ternary adsorption systems ranging from ideal to highly non-ideal ternary mixtures. The predicted isotherms are discussed and compared with experimental ones as well as with those obtained for a model based on the absolute quantities. The results confirm: (i) superiority of predicting adsorption in terms of excess quantities, and (ii) utility of geometrical models for constructing ternary molar compositions on the basis of binary ones to predict equilibria not only for liquid mixtures alone but also for adsorption of liquid mixtures on solid surfaces.
通过将热力学过量形式与几何模型相结合，可以提高通过对应三元二元液体混合物的吸附数据来预测三元液体混合物在固体表面上的吸附平衡的准确性。本文研究了一种新的预测过量吸附等温线的策略，共考察了四个从理想到高度非理想三元混合物的三元吸附体系。讨论了预测的等温线，并与实验数据以及基于绝对量的模型得到的等温线进行了比较。结果证实：（i）用过量量预测吸附的优越性，以及（ii）几何模型在基于二元构建三元摩尔组成以预测不仅限于液体混合物而且还预测液体混合物在固体表面上的吸附平衡的能力。
