
TY  - JOUR
A1  - Lane, JE 
T1  - A multilayer model of a solid-regular solution interface
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1968
VL  - 21
IS  - 4
SP  - 827
EP  - 851
KW  - 
UR  - https://doi.org/10.1071/CH9680827 
N2  - A multilayer model of the interface between a solid and a regular solution  has been developed by treating the solution phase in the grand canonical ensemble.   The partition functions necessary for the evaluation of the grand partition function   are obtained using either the quasi-chemical or Bragg-Williams approximations.   The equilibrium concentration profile normal to the interface is then found from the   maximum term in the multiple sum for the grand partition function. The adsorption,   surface tension, and heat of wetting for the multilayer model are derived, and   methods of obtaining the model parameters from experimental data are suggested.   A comparison has been made between the quasi-chemical and Bragg-TVilliams  approximations for the multilayer model. The monolayer model is also discussed, and   compared with the multilayer for both the solid-regular solution and the low-density  vapour-regular solution interfaces. It is shown that the monolayer model can often be   fitted to the multilayer model by a suitable choice of parameters. It is concluded   that in the absence of absolute methods of obtaining the area of the solid-solution  interface, the experimental data may not provide outright support for the multi-   layer model, but internal inconsistencies discourage the use of the monolayer model.  There is an increasing interest in the properties of the interface between a solid   and a non-electrolyte solution.1 The majority of experimental studies of this type   of interface have been restricted to the measurement of adsorption, but in some   instances the heat of wetting as a function of bulk phase composition has also been  determined. In most cases, the complexity of the liquid phase and the surface region   has allowed only a qualitative interpretation of the experimental results. Neverthe-   less, there have been a few investigations in which solutions of comparatively simple  molecules have been used and the experimental results have been treated in a   quantitative manner.2-5 Some simple monolayer models of the solid-solution inter-  face have been proposed for which the structure of the solid phase has been ignored,   Division of Applied Chemistry, CSIRO Chemical Research Laboratories, Melbourne,  Vic. 3001.   Kipling, J. J., &quot;Adsorption from Solutions of Non-Electrolytes.&quot; (Academic Press:   London 1965.)   Billet, D. F., Everett, D. H., and Wright, E. H. &amp;I., Proc. chem. Soc. 1964, 216.   3 Blackburn, A., and Kipling, J. J., J. chem. Soc., 1954, 3819.   4 Blackburn, A., Kipling, J. J., and Tester, D. A., J. chem. Soc. 1957, 2373.   5 Wright, E. H. &amp;I., Trans. Paraday Soc., 1966, 62, 1275.  Aust. J. Chem., 1968, 21, 827-51 
ER  -

