Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ions

Autores: Vilche, Jorge Roberto; Arvia, Alejandro Jorge
Año de publicación: 1975
Idioma: inglés
Tipo de recurso: artículo
Estado: versión publicada
Descripción: The kinetics of the Ni electrode in acid solutions with a high chloride ion concentration has been investigated in the range of 25–75°C. Dissolution occurs uniformly only at low anodic potentials. When the latter exceeds a critical value, Ecrit, net localized metal corrosion takes place. The $E ln i_{a}$ plot at E < Ecrit corresponds to a curve approaching two limiting slopes, namely, $2RT 3F$ at ( $E − E_{rest}) → 0, and 2RT F at E → E_{crit}$ . The cathodic Tafel slope is $2RT F$ . These results, including their pH dependence, are explained with a reaction mechanism involving the participation of adsorbed hydroxo-species.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia: Ciencias Exactas
Química
Kinetics
Nickel electrode
Adsorbed hydroxo-species
Nivel de accesibilidad: acceso abierto
Condiciones de uso: http://creativecommons.org/licenses/by/4.0/
Repositorio
Institución: Universidad Nacional de La Plata
OAI Identificador: oai:sedici.unlp.edu.ar:10915/121739

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repository_id_str	1329
network_name_str	SEDICI (UNLP)
spelling	Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ionsVilche, Jorge RobertoArvia, Alejandro JorgeCiencias ExactasQuímicaKineticsNickel electrodeAdsorbed hydroxo-speciesThe kinetics of the Ni electrode in acid solutions with a high chloride ion concentration has been investigated in the range of 25–75°C. Dissolution occurs uniformly only at low anodic potentials. When the latter exceeds a critical value, Ecrit, net localized metal corrosion takes place. The <math><mtext>E</mtext><mtext>ln</mtext><mtext> i</mtext><msub><mi></mi><mn>a</mn></msub></math> plot at E < Ecrit corresponds to a curve approaching two limiting slopes, namely, <math><mtext>2RT</mtext><mtext>3F</mtext></math> at (<math><mtext>E − E</mtext><msub><mi></mi><mn><mtext>rest</mtext></mn></msub><mtext>) → 0, </mtext><mtext>and</mtext><mtext> </mtext><mtext>2RT</mtext><mtext>F</mtext><mtext> </mtext><mtext>at</mtext><mtext> E → E</mtext><msub><mi></mi><mn><mtext>crit</mtext></mn></msub></math>. The cathodic Tafel slope is <math><mtext>2RT</mtext><mtext>F</mtext></math>. These results, including their pH dependence, are explained with a reaction mechanism involving the participation of adsorbed hydroxo-species.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1975info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf419-431http://sedici.unlp.edu.ar/handle/10915/121739enginfo:eu-repo/semantics/altIdentifier/issn/0010-938Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/0010-938X(75)90009-8info: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:UNLP2025-10-22T17:09:49Zoai:sedici.unlp.edu.ar:10915/121739Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:09:49.531SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv	Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ions
title	Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ions
spellingShingle	Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ions Vilche, Jorge Roberto Ciencias Exactas Química Kinetics Nickel electrode Adsorbed hydroxo-species
title_short	Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ions
title_full	Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ions
title_fullStr	Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ions
title_full_unstemmed	Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ions
title_sort	Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ions
dc.creator.none.fl_str_mv	Vilche, Jorge Roberto Arvia, Alejandro Jorge
author	Vilche, Jorge Roberto
author_facet	Vilche, Jorge Roberto Arvia, Alejandro Jorge
author_role	author
author2	Arvia, Alejandro Jorge
author2_role	author
dc.subject.none.fl_str_mv	Ciencias Exactas Química Kinetics Nickel electrode Adsorbed hydroxo-species
topic	Ciencias Exactas Química Kinetics Nickel electrode Adsorbed hydroxo-species
dc.description.none.fl_txt_mv	The kinetics of the Ni electrode in acid solutions with a high chloride ion concentration has been investigated in the range of 25–75°C. Dissolution occurs uniformly only at low anodic potentials. When the latter exceeds a critical value, Ecrit, net localized metal corrosion takes place. The <math><mtext>E</mtext><mtext>ln</mtext><mtext> i</mtext><msub><mi></mi><mn>a</mn></msub></math> plot at E < Ecrit corresponds to a curve approaching two limiting slopes, namely, <math><mtext>2RT</mtext><mtext>3F</mtext></math> at (<math><mtext>E − E</mtext><msub><mi></mi><mn><mtext>rest</mtext></mn></msub><mtext>) → 0, </mtext><mtext>and</mtext><mtext> </mtext><mtext>2RT</mtext><mtext>F</mtext><mtext> </mtext><mtext>at</mtext><mtext> E → E</mtext><msub><mi></mi><mn><mtext>crit</mtext></mn></msub></math>. The cathodic Tafel slope is <math><mtext>2RT</mtext><mtext>F</mtext></math>. These results, including their pH dependence, are explained with a reaction mechanism involving the participation of adsorbed hydroxo-species. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description	The kinetics of the Ni electrode in acid solutions with a high chloride ion concentration has been investigated in the range of 25–75°C. Dissolution occurs uniformly only at low anodic potentials. When the latter exceeds a critical value, Ecrit, net localized metal corrosion takes place. The <math><mtext>E</mtext><mtext>ln</mtext><mtext> i</mtext><msub><mi></mi><mn>a</mn></msub></math> plot at E < Ecrit corresponds to a curve approaching two limiting slopes, namely, <math><mtext>2RT</mtext><mtext>3F</mtext></math> at (<math><mtext>E − E</mtext><msub><mi></mi><mn><mtext>rest</mtext></mn></msub><mtext>) → 0, </mtext><mtext>and</mtext><mtext> </mtext><mtext>2RT</mtext><mtext>F</mtext><mtext> </mtext><mtext>at</mtext><mtext> E → E</mtext><msub><mi></mi><mn><mtext>crit</mtext></mn></msub></math>. The cathodic Tafel slope is <math><mtext>2RT</mtext><mtext>F</mtext></math>. These results, including their pH dependence, are explained with a reaction mechanism involving the participation of adsorbed hydroxo-species.
publishDate	1975
dc.date.none.fl_str_mv	1975
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/10915/121739
url	http://sedici.unlp.edu.ar/handle/10915/121739
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(75)90009-8
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 419-431
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
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score	12.982451

Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ions

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