A computer simulation of voltammograms describing the active-passive transition of Pb in sulphuric acid

A computer simulation of active-passive transition voltammograms of Pb in 5M H<sub>2</sub>SO<sub>4</sub> is presented The model unphes alternatlve pathways leading to the formatron of Inner and outer structurally different PbSO<sub>4</sub> layers The inner layer c...

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Autores principales: Varela, Francisco Eduardo, Vilche, Jorge Roberto, Arvia, Alejandro Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 1994
Materias:
Ciencias Exactas
Química
Leacl/sulphuric acid system
Computer srmulatlon of voltammograms
Lead pasavatlon
Active-passive transitional modeling
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/118447
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-118447
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Química
Leacl/sulphuric acid system
Computer srmulatlon of voltammograms
Lead pasavatlon
Active-passive transitional modeling
spellingShingle Ciencias Exactas
Química
Leacl/sulphuric acid system
Computer srmulatlon of voltammograms
Lead pasavatlon
Active-passive transitional modeling
Varela, Francisco Eduardo
Vilche, Jorge Roberto
Arvia, Alejandro Jorge
A computer simulation of voltammograms describing the active-passive transition of Pb in sulphuric acid
topic_facet Ciencias Exactas
Química
Leacl/sulphuric acid system
Computer srmulatlon of voltammograms
Lead pasavatlon
Active-passive transitional modeling
description A computer simulation of active-passive transition voltammograms of Pb in 5M H<sub>2</sub>SO<sub>4</sub> is presented The model unphes alternatlve pathways leading to the formatron of Inner and outer structurally different PbSO<sub>4</sub> layers The inner layer consists of a dtsordered crystallme conductmg phase, which 1s formed followmg an instantaneous nucleation and twodlmenslonal growth mechanism under chargetransfer control Electrodlssolutlon of Pb proceeds by the dlffuslon of cations through the inner layer and, when Pb<sup>2+</sup> ion concentration in solution exceeds the cntical supersaturation concentration, the precqutatlon of the outer highly crystalline PbSO<sub>4</sub> layer takes place, leading to passlvatlon Calculations are based on premously reported kinetic data. Good agreement was found between theory and practice.
format Articulo
Articulo
author Varela, Francisco Eduardo
Vilche, Jorge Roberto
Arvia, Alejandro Jorge
author_facet Varela, Francisco Eduardo
Vilche, Jorge Roberto
Arvia, Alejandro Jorge
author_sort Varela, Francisco Eduardo
title A computer simulation of voltammograms describing the active-passive transition of Pb in sulphuric acid
title_short A computer simulation of voltammograms describing the active-passive transition of Pb in sulphuric acid
title_full A computer simulation of voltammograms describing the active-passive transition of Pb in sulphuric acid
title_fullStr A computer simulation of voltammograms describing the active-passive transition of Pb in sulphuric acid
title_full_unstemmed A computer simulation of voltammograms describing the active-passive transition of Pb in sulphuric acid
title_sort computer simulation of voltammograms describing the active-passive transition of pb in sulphuric acid
publishDate 1994
url http://sedici.unlp.edu.ar/handle/10915/118447
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