Iron dissolution and passivation in K<sub>2</sub>CO<sub>3</sub>-KHCO<sub>3</sub> solutions. Rotating ring disc electrode and XPS studies

Autores
Castro, Élida Beatriz; Vilche, Jorge Roberto; Arvia, Alejandro Jorge
Año de publicación
1991
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Rotating ring-disc electrode studies on the anodic dissolution and passivation of iron in potassium carbonate/bicarbonate buffers at 25°C show that in the active anodic dissolution potential range Fe(II) soluble species are generated. This reaction is favoured by the presence of bicarbonate ions in solution and it is explained through the formation of an unstable soluble complex containing Fe(II) and HCO3−ions. This suggests that the anodic layer at a certain stage of its formation contains some amount of carbonate species. XPS data of surface layers produced at different anodic potentials confirm the presence of the carbonate species in thick anodic layers grown in the prepassive potential region in still solutions, whereas the opposite result is found for the thin passive layers formed at high positive potentials.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)
Facultad de Ciencias Exactas
Materia
Ciencias Exactas
Química
Electrodos
Hierro
Disolución
Discos Rotatorios
Bicarbonatos
Iones
Soluciones
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/79769
Acceder
id SEDICI_0b08aebcd106a69440fafa24ea0f7a81
oai_identifier_str oai:sedici.unlp.edu.ar:10915/79769
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Iron dissolution and passivation in K<sub>2</sub>CO<sub>3</sub>-KHCO<sub>3</sub> solutions. Rotating ring disc electrode and XPS studiesCastro, Élida BeatrizVilche, Jorge RobertoArvia, Alejandro JorgeCiencias ExactasQuímicaElectrodosHierroDisoluciónDiscos RotatoriosBicarbonatosIonesSolucionesRotating ring-disc electrode studies on the anodic dissolution and passivation of iron in potassium carbonate/bicarbonate buffers at 25°C show that in the active anodic dissolution potential range Fe(II) soluble species are generated. This reaction is favoured by the presence of bicarbonate ions in solution and it is explained through the formation of an unstable soluble complex containing Fe(II) and HCO<sub>3</sub>−ions. This suggests that the anodic layer at a certain stage of its formation contains some amount of carbonate species. XPS data of surface layers produced at different anodic potentials confirm the presence of the carbonate species in thick anodic layers grown in the prepassive potential region in still solutions, whereas the opposite result is found for the thin passive layers formed at high positive potentials.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)Facultad de Ciencias Exactas1991info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf37-50http://sedici.unlp.edu.ar/handle/10915/79769enginfo:eu-repo/semantics/altIdentifier/issn/0010-938Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/0010-938X(91)90062-Tinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:06:29Zoai:sedici.unlp.edu.ar:10915/79769Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:06:29.995SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Iron dissolution and passivation in K<sub>2</sub>CO<sub>3</sub>-KHCO<sub>3</sub> solutions. Rotating ring disc electrode and XPS studies
title Iron dissolution and passivation in K<sub>2</sub>CO<sub>3</sub>-KHCO<sub>3</sub> solutions. Rotating ring disc electrode and XPS studies
spellingShingle Iron dissolution and passivation in K<sub>2</sub>CO<sub>3</sub>-KHCO<sub>3</sub> solutions. Rotating ring disc electrode and XPS studies
Castro, Élida Beatriz
Ciencias Exactas
Química
Electrodos
Hierro
Disolución
Discos Rotatorios
Bicarbonatos
Iones
Soluciones
title_short Iron dissolution and passivation in K<sub>2</sub>CO<sub>3</sub>-KHCO<sub>3</sub> solutions. Rotating ring disc electrode and XPS studies
title_full Iron dissolution and passivation in K<sub>2</sub>CO<sub>3</sub>-KHCO<sub>3</sub> solutions. Rotating ring disc electrode and XPS studies
title_fullStr Iron dissolution and passivation in K<sub>2</sub>CO<sub>3</sub>-KHCO<sub>3</sub> solutions. Rotating ring disc electrode and XPS studies
title_full_unstemmed Iron dissolution and passivation in K<sub>2</sub>CO<sub>3</sub>-KHCO<sub>3</sub> solutions. Rotating ring disc electrode and XPS studies
title_sort Iron dissolution and passivation in K<sub>2</sub>CO<sub>3</sub>-KHCO<sub>3</sub> solutions. Rotating ring disc electrode and XPS studies
dc.creator.none.fl_str_mv Castro, Élida Beatriz
Vilche, Jorge Roberto
Arvia, Alejandro Jorge
author Castro, Élida Beatriz
author_facet Castro, Élida Beatriz
Vilche, Jorge Roberto
Arvia, Alejandro Jorge
author_role author
author2 Vilche, Jorge Roberto
Arvia, Alejandro Jorge
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Química
Electrodos
Hierro
Disolución
Discos Rotatorios
Bicarbonatos
Iones
Soluciones
topic Ciencias Exactas
Química
Electrodos
Hierro
Disolución
Discos Rotatorios
Bicarbonatos
Iones
Soluciones
dc.description.none.fl_txt_mv Rotating ring-disc electrode studies on the anodic dissolution and passivation of iron in potassium carbonate/bicarbonate buffers at 25°C show that in the active anodic dissolution potential range Fe(II) soluble species are generated. This reaction is favoured by the presence of bicarbonate ions in solution and it is explained through the formation of an unstable soluble complex containing Fe(II) and HCO<sub>3</sub>−ions. This suggests that the anodic layer at a certain stage of its formation contains some amount of carbonate species. XPS data of surface layers produced at different anodic potentials confirm the presence of the carbonate species in thick anodic layers grown in the prepassive potential region in still solutions, whereas the opposite result is found for the thin passive layers formed at high positive potentials.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)
Facultad de Ciencias Exactas
description Rotating ring-disc electrode studies on the anodic dissolution and passivation of iron in potassium carbonate/bicarbonate buffers at 25°C show that in the active anodic dissolution potential range Fe(II) soluble species are generated. This reaction is favoured by the presence of bicarbonate ions in solution and it is explained through the formation of an unstable soluble complex containing Fe(II) and HCO<sub>3</sub>−ions. This suggests that the anodic layer at a certain stage of its formation contains some amount of carbonate species. XPS data of surface layers produced at different anodic potentials confirm the presence of the carbonate species in thick anodic layers grown in the prepassive potential region in still solutions, whereas the opposite result is found for the thin passive layers formed at high positive potentials.
publishDate 1991
dc.date.none.fl_str_mv 1991
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/10915/79769
url http://sedici.unlp.edu.ar/handle/10915/79769
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0010-938X
info:eu-repo/semantics/altIdentifier/doi/10.1016/0010-938X(91)90062-T
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
37-50
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_ 1846064120450777088
score 13.22299

Publicaciones similares