Kinetics of the spontaneous dissolution of iron in concentrated ionic media

Autores
Podestá, José J.; Arvia, Alejandro Jorge
Año de publicación
1965
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The kinetics of the dissolution of polycrystalline iron in acid solutions has been studied. Perchloric acid in sodium perchlorate, hydrochloric acid in sodium chloride and nitric acid in sodium nitrate solutions were used, covering the range of pH between 0 and 6 at temperatures from 40 to 70°C. The rate of dissolution was followed by recording the activity of hydrogen ion in the solution, the corrosion potential being constant during the run. The kinetic constant for hydrogen-ion disappearance was used to calculate the corrosion current-density assuming that hydrogen-ion discharge on an iron surface follows a Tafel equation with a slope of 2·3(2RT/F). For sodium perchlorate solutions the corrosion current increases with pH (in the range 1–5) with δ log icorr/δpH = −1. For sodium chloride solutions the slope is close to −0·50. In the same range of pH the corrosion rate is greater in the order ClO4−, Cl−, NO3−. The results are interpreted in terms of recent information about the kinetics of the iron electrode.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Ciencias Exactas
Química
Polycrystalline iron
Dissolution
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:10915/122079

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network_name_str SEDICI (UNLP)
spelling Kinetics of the spontaneous dissolution of iron in concentrated ionic mediaPodestá, José J.Arvia, Alejandro JorgeCiencias ExactasQuímicaPolycrystalline ironDissolutionThe kinetics of the dissolution of polycrystalline iron in acid solutions has been studied. Perchloric acid in sodium perchlorate, hydrochloric acid in sodium chloride and nitric acid in sodium nitrate solutions were used, covering the range of pH between 0 and 6 at temperatures from 40 to 70°C. The rate of dissolution was followed by recording the activity of hydrogen ion in the solution, the corrosion potential being constant during the run. The kinetic constant for hydrogen-ion disappearance was used to calculate the corrosion current-density assuming that hydrogen-ion discharge on an iron surface follows a Tafel equation with a slope of 2·3(2RT/F). For sodium perchlorate solutions the corrosion current increases with pH (in the range 1–5) with δ log i<sub>corr</sub>/δpH = −1. For sodium chloride solutions the slope is close to −0·50. In the same range of pH the corrosion rate is greater in the order ClO4−, Cl−, NO3−. The results are interpreted in terms of recent information about the kinetics of the iron electrode.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1965-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf159-169http://sedici.unlp.edu.ar/handle/10915/122079enginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/0013468665870165info:eu-repo/semantics/altIdentifier/issn/0013-4686info:eu-repo/semantics/altIdentifier/doi/10.1016/0013-4686(65)87016-5info: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:UNLP2025-09-29T11:28:59Zoai:sedici.unlp.edu.ar:10915/122079Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:29:00.281SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Kinetics of the spontaneous dissolution of iron in concentrated ionic media
title Kinetics of the spontaneous dissolution of iron in concentrated ionic media
spellingShingle Kinetics of the spontaneous dissolution of iron in concentrated ionic media
Podestá, José J.
Ciencias Exactas
Química
Polycrystalline iron
Dissolution
title_short Kinetics of the spontaneous dissolution of iron in concentrated ionic media
title_full Kinetics of the spontaneous dissolution of iron in concentrated ionic media
title_fullStr Kinetics of the spontaneous dissolution of iron in concentrated ionic media
title_full_unstemmed Kinetics of the spontaneous dissolution of iron in concentrated ionic media
title_sort Kinetics of the spontaneous dissolution of iron in concentrated ionic media
dc.creator.none.fl_str_mv Podestá, José J.
Arvia, Alejandro Jorge
author Podestá, José J.
author_facet Podestá, José J.
Arvia, Alejandro Jorge
author_role author
author2 Arvia, Alejandro Jorge
author2_role author
dc.subject.none.fl_str_mv Ciencias Exactas
Química
Polycrystalline iron
Dissolution
topic Ciencias Exactas
Química
Polycrystalline iron
Dissolution
dc.description.none.fl_txt_mv The kinetics of the dissolution of polycrystalline iron in acid solutions has been studied. Perchloric acid in sodium perchlorate, hydrochloric acid in sodium chloride and nitric acid in sodium nitrate solutions were used, covering the range of pH between 0 and 6 at temperatures from 40 to 70°C. The rate of dissolution was followed by recording the activity of hydrogen ion in the solution, the corrosion potential being constant during the run. The kinetic constant for hydrogen-ion disappearance was used to calculate the corrosion current-density assuming that hydrogen-ion discharge on an iron surface follows a Tafel equation with a slope of 2·3(2RT/F). For sodium perchlorate solutions the corrosion current increases with pH (in the range 1–5) with δ log i<sub>corr</sub>/δpH = −1. For sodium chloride solutions the slope is close to −0·50. In the same range of pH the corrosion rate is greater in the order ClO4−, Cl−, NO3−. The results are interpreted in terms of recent information about the kinetics of the iron electrode.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description The kinetics of the dissolution of polycrystalline iron in acid solutions has been studied. Perchloric acid in sodium perchlorate, hydrochloric acid in sodium chloride and nitric acid in sodium nitrate solutions were used, covering the range of pH between 0 and 6 at temperatures from 40 to 70°C. The rate of dissolution was followed by recording the activity of hydrogen ion in the solution, the corrosion potential being constant during the run. The kinetic constant for hydrogen-ion disappearance was used to calculate the corrosion current-density assuming that hydrogen-ion discharge on an iron surface follows a Tafel equation with a slope of 2·3(2RT/F). For sodium perchlorate solutions the corrosion current increases with pH (in the range 1–5) with δ log i<sub>corr</sub>/δpH = −1. For sodium chloride solutions the slope is close to −0·50. In the same range of pH the corrosion rate is greater in the order ClO4−, Cl−, NO3−. The results are interpreted in terms of recent information about the kinetics of the iron electrode.
publishDate 1965
dc.date.none.fl_str_mv 1965-02
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/10915/122079
url http://sedici.unlp.edu.ar/handle/10915/122079
dc.language.none.fl_str_mv eng
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dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/0013468665870165
info:eu-repo/semantics/altIdentifier/issn/0013-4686
info:eu-repo/semantics/altIdentifier/doi/10.1016/0013-4686(65)87016-5
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
159-169
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