Equilibria in the grafted layer of silica chemically modified with propionic acid

Yu.V.Kholin, Yu.V.Shabayeva


Kharkiv State University, 4 Svobody Sq., 310077 Kharkiv, Ukraine

Received May 4, 1998

Chemical equilibria on the surface of silica chemically modified with propionic acid were studied by quantitative physicochemical analysis. The stoichiometric composition and stability constants of fixed complexes were determined. The nature and concentration of the background electrolyte in the water phase have been shown to affect decisevely the state of counter-ions in the adsorptional layer of complexing silica.

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