Determinations of the adsorption of sulfates at the ZrO2|solution interface have been performed at constant ionic strength (10-2 M KNO3) and at two different pH values (isotherm 1, pH 4.5; isotherm 2, pH 2.6). In both cases the adsorption isotherms presented a langmuirian shape; parameters describing the adsorption were obtained by processing data in the reciprocal Langmuir coordinates. The degree of packing of the adsorbed molecules and the nature of the forces supporting the adsorption are also discussed on the basis of literature results.

Sulfate-modified zirconia catalysts : The role of surface electrification on the features of the sulfate adsorption process / S. Ardizzone, E. Grassi. - In: JOURNAL OF ELECTROANALYTICAL CHEMISTRY. - ISSN 1572-6657. - 417:1-2(1996), pp. 193-195.

Sulfate-modified zirconia catalysts : The role of surface electrification on the features of the sulfate adsorption process

S. Ardizzone
Primo
;
1996

Abstract

Determinations of the adsorption of sulfates at the ZrO2|solution interface have been performed at constant ionic strength (10-2 M KNO3) and at two different pH values (isotherm 1, pH 4.5; isotherm 2, pH 2.6). In both cases the adsorption isotherms presented a langmuirian shape; parameters describing the adsorption were obtained by processing data in the reciprocal Langmuir coordinates. The degree of packing of the adsorbed molecules and the nature of the forces supporting the adsorption are also discussed on the basis of literature results.
Adsorption isotherms ; Catalysts ; Ionic strength ; pH ; Phase interfaces ; Solutions ; Sulfuric acid ; X ray diffraction analysis ; Zirconia, Double layer ; Langmuir coordinates ; Sulfate adsorption process ; Sulfated zirconia ; Surface electrification, Electrochemistry
Settore CHIM/02 - Chimica Fisica
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/185498
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