Abstract
The determination of the specific surface from measurement of adsorption of dyes and of phenol from aqueous solution, and of fatty acids from non-aqueous solution, is described. Experimental methods are outlined, and results obtained for a wide range of solids which are compared with values determined by electron microscopy and by nitrogen adsorption.
Résumé
On décrit la détermination de la surface spécifique par mesure de l’adsorption de colorants et de phénol en solution aqueuse et d’acides gras en solution dans des solvants. L’adsorption des colorants et des acides gras est généralement monomoléculaire. L’analyse des isothermes se fait par la méthode de Langmuir. On constate néanmoins une adsorption multimoléculaire du phénol, et les isothermes sont alors étudiés conformément à l’équation de Brunauer-Emmett-Teller. On présente brièvement les méthodes expérimentales et les résultats obtenus pour une large gamme de solides, lesquels sont comparés aux valeurs déterminées par microscopie électronique et par adsorption d’azote.
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Därr, G.M., Ludwig, U. Determination of the specific surface by adsorption from solution. Mat. Constr. 6, 233–237 (1973). https://doi.org/10.1007/BF02479038
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DOI: https://doi.org/10.1007/BF02479038