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Title

The isotherm slope. A criterion for studying the adsorption mechanism of benzotriazole on copper in sulphuric acid

Other TitlesPendiente de la isoterma. Un criterio para estudiar el mecanismo de adsorción del benzotriazol sobre el cobre en ácido sulfúrico
AuthorsBastidas, David M. CSIC ORCID; Gómez, R. R.; Cano Díaz, Emilio CSIC ORCID
KeywordsCopper
Sulphuric acid. Benzotriazole
Adsorption isotherms
Objective function
Projected molecular area
Cobre
Acido sulfúrico
Benzotriazol
Isoterma de adsorción
Función objetivo
Área molecular proyectada
Issue Date30-Apr-2005
PublisherConsejo Superior de Investigaciones Científicas (España)
CitationRevista de Metalurgia 41(2): 98-106 (2005)
Abstract[EN] The adsorption of benzotriazole (BTA) on copper surfaces in 0.001, 0.005 and 0.01 M concentrations of sulphuric acid was investigated using gravimetric measurements. BTA was tested in concentrations from 1x10 to 1x10 M at temperatures from 298 to 328 K. The adsorption mechanism is discussed in terms of applicability of the conventional Frumkin, Bockris-Swinkels and Kastening-Holleck isotherms, among others. The best fit was obtained using the Frumkin isotherm model. The projected molecular area of BTA was calculated to elucidate inhibitor orientation in the adsorption process.
[ES] En el presente trabajo se estudia la adsorción del benzotriazol (BTA) sobre el cobre en solución de ácido sulfúrico con concentraciones de 0,001, 0,005 y 0,01 M utilizando medidas gravimétricas. La concentración de BTA ensayada varió de 1x10'^ M a 1x10'^ M y la temperatura de 298 K a 328 K. El mecanismo de adsorción se analiza en términos de la aplicabilidad de las isotermas convencionales de Frumkin, Bockris-Swinkels y Kastening- HoUeck, entre otras. La mejor descripción de los resultados se obtuvo utilizando la isoterma de Frumkin. Para analizar la orientación del BTA en el proceso de adsorción sobre el cobre, se calculó la superficie de la molécula de BTA.
Description9 pages, 7 figures, 2 tables.
Publisher version (URL)http://dx.doi.org/10.3989/revmetalm.2005.v41.i2.192
URIhttp://hdl.handle.net/10261/21192
DOI10.3989/revmetalm.2005.v41.i2.192
ISSN0034-8570
E-ISSN1988-4222
Appears in Collections:(CENIM) Artículos

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