Kinetics and mechanism of the electrochemical reduction of a platinum oxide monolayer in molten alkaline bisulphates under constant ageing conditions : II. Temperature effect

Autores
Tacconi, Norma R. de; Calandra, Alfredo J.; Arvia, Alejandro Jorge
Año de publicación
1974
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The electrochemical reduction of a platinum oxide monolayer anodically formed in NaHSO4−KHSO4 and KHSO4 melts is investigated under equivalent ageing conditions from 185 to 315°C with application of the linear potential sweep technique. The experimental potentiodynamic current/potential profiles are reproduced with equations derived from a reaction mechanism involving an initial electron transfer reaction followed by a second order recombination step under Temkin conditions. The rate equations imply negative Temkin factors which, in absolute value, increase with temperature.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Ciencias Exactas
Química
Electrochemical reduction
Platinum oxide monolayer
Temperature
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/121710
Acceder
id SEDICI_85e7ecf7199d6f33907303c97a35f0e8
oai_identifier_str oai:sedici.unlp.edu.ar:10915/121710
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Kinetics and mechanism of the electrochemical reduction of a platinum oxide monolayer in molten alkaline bisulphates under constant ageing conditions : II. Temperature effectTacconi, Norma R. deCalandra, Alfredo J.Arvia, Alejandro JorgeCiencias ExactasQuímicaElectrochemical reductionPlatinum oxide monolayerTemperatureThe electrochemical reduction of a platinum oxide monolayer anodically formed in NaHSO<sup>4</sup>−KHSO<sup>4</sup> and KHSO<sup>4</sup> melts is investigated under equivalent ageing conditions from 185 to 315°C with application of the linear potential sweep technique. The experimental potentiodynamic current/potential profiles are reproduced with equations derived from a reaction mechanism involving an initial electron transfer reaction followed by a second order recombination step under Temkin conditions. The rate equations imply negative Temkin factors which, in absolute value, increase with temperature.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1974info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf325-338http://sedici.unlp.edu.ar/handle/10915/121710enginfo:eu-repo/semantics/altIdentifier/issn/0022-0728info:eu-repo/semantics/altIdentifier/doi/10.1016/S0022-0728(74)80058-6info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:20:48Zoai:sedici.unlp.edu.ar:10915/121710Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:20:48.365SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Kinetics and mechanism of the electrochemical reduction of a platinum oxide monolayer in molten alkaline bisulphates under constant ageing conditions : II. Temperature effect
title Kinetics and mechanism of the electrochemical reduction of a platinum oxide monolayer in molten alkaline bisulphates under constant ageing conditions : II. Temperature effect
spellingShingle Kinetics and mechanism of the electrochemical reduction of a platinum oxide monolayer in molten alkaline bisulphates under constant ageing conditions : II. Temperature effect
Tacconi, Norma R. de
Ciencias Exactas
Química
Electrochemical reduction
Platinum oxide monolayer
Temperature
title_short Kinetics and mechanism of the electrochemical reduction of a platinum oxide monolayer in molten alkaline bisulphates under constant ageing conditions : II. Temperature effect
title_full Kinetics and mechanism of the electrochemical reduction of a platinum oxide monolayer in molten alkaline bisulphates under constant ageing conditions : II. Temperature effect
title_fullStr Kinetics and mechanism of the electrochemical reduction of a platinum oxide monolayer in molten alkaline bisulphates under constant ageing conditions : II. Temperature effect
title_full_unstemmed Kinetics and mechanism of the electrochemical reduction of a platinum oxide monolayer in molten alkaline bisulphates under constant ageing conditions : II. Temperature effect
title_sort Kinetics and mechanism of the electrochemical reduction of a platinum oxide monolayer in molten alkaline bisulphates under constant ageing conditions : II. Temperature effect
dc.creator.none.fl_str_mv Tacconi, Norma R. de
Calandra, Alfredo J.
Arvia, Alejandro Jorge
author Tacconi, Norma R. de
author_facet Tacconi, Norma R. de
Calandra, Alfredo J.
Arvia, Alejandro Jorge
author_role author
author2 Calandra, Alfredo J.
Arvia, Alejandro Jorge
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Química
Electrochemical reduction
Platinum oxide monolayer
Temperature
topic Ciencias Exactas
Química
Electrochemical reduction
Platinum oxide monolayer
Temperature
dc.description.none.fl_txt_mv The electrochemical reduction of a platinum oxide monolayer anodically formed in NaHSO<sup>4</sup>−KHSO<sup>4</sup> and KHSO<sup>4</sup> melts is investigated under equivalent ageing conditions from 185 to 315°C with application of the linear potential sweep technique. The experimental potentiodynamic current/potential profiles are reproduced with equations derived from a reaction mechanism involving an initial electron transfer reaction followed by a second order recombination step under Temkin conditions. The rate equations imply negative Temkin factors which, in absolute value, increase with temperature.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description The electrochemical reduction of a platinum oxide monolayer anodically formed in NaHSO<sup>4</sup>−KHSO<sup>4</sup> and KHSO<sup>4</sup> melts is investigated under equivalent ageing conditions from 185 to 315°C with application of the linear potential sweep technique. The experimental potentiodynamic current/potential profiles are reproduced with equations derived from a reaction mechanism involving an initial electron transfer reaction followed by a second order recombination step under Temkin conditions. The rate equations imply negative Temkin factors which, in absolute value, increase with temperature.
publishDate 1974
dc.date.none.fl_str_mv 1974
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/121710
url http://sedici.unlp.edu.ar/handle/10915/121710
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0022-0728
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0022-0728(74)80058-6
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
325-338
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1846064264822915072
score 13.22299

Publicaciones similares