Kinetics and mechanism of anodic oxidation of nitrite ion in nitrate melts on platinum electrodes
- Autores
- Martins, María Elisa; Calandra, Alfredo J.; Arvia, Alejandro Jorge
- Año de publicación
- 1970
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The electrochemical oxidation of nitrite ion in KNO3-NaNO3 eutectic melt on a platinum rotating disk electrode has been studied in the temperature range 247 to 312°C. The current/voltage curves comprise at least two regions. At high overvoltages the process is under a net convective diffusion control whereas at low ones the kinetics of the electrode process involves both convective diffusion and activation-polarization terms. From the current/voltage curves the kinetic parameters of each contribution are evaluated as well as the diffusion coefficient of nitrite ion in the melt. The electrode process is discussed in terms of the over-all reaction NO2− → NO2 + e and of the reaction mechanisms previously postulated, where the initial electron-transfer step becomes rate-determining as the nitrite ion concentration diminishes. The results are compared to those obtained with the pure nitrite melt.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas - Materia
-
Ciencias Exactas
Química
Electrochemical oxidation
Platinum
Kinetic parameters - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/121502
Ver los metadatos del registro completo
| id |
SEDICI_03cf09c0ed22ca191b90c951ce70651a |
|---|---|
| oai_identifier_str |
oai:sedici.unlp.edu.ar:10915/121502 |
| network_acronym_str |
SEDICI |
| repository_id_str |
1329 |
| network_name_str |
SEDICI (UNLP) |
| spelling |
Kinetics and mechanism of anodic oxidation of nitrite ion in nitrate melts on platinum electrodesMartins, María ElisaCalandra, Alfredo J.Arvia, Alejandro JorgeCiencias ExactasQuímicaElectrochemical oxidationPlatinumKinetic parametersThe electrochemical oxidation of nitrite ion in KNO<sub>3</sub>-NaNO<sub>3</sub> eutectic melt on a platinum rotating disk electrode has been studied in the temperature range 247 to 312°C. The current/voltage curves comprise at least two regions. At high overvoltages the process is under a net convective diffusion control whereas at low ones the kinetics of the electrode process involves both convective diffusion and activation-polarization terms. From the current/voltage curves the kinetic parameters of each contribution are evaluated as well as the diffusion coefficient of nitrite ion in the melt. The electrode process is discussed in terms of the over-all reaction NO<sub>2</sub>− → NO<sub>2</sub> + e and of the reaction mechanisms previously postulated, where the initial electron-transfer step becomes rate-determining as the nitrite ion concentration diminishes. The results are compared to those obtained with the pure nitrite melt.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1970info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf111-126http://sedici.unlp.edu.ar/handle/10915/121502enginfo:eu-repo/semantics/altIdentifier/issn/0013-4686info:eu-repo/semantics/altIdentifier/doi/10.1016/0013-4686(70)90012-5info: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:UNLP2025-10-15T11:20:43Zoai:sedici.unlp.edu.ar:10915/121502Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:20:43.622SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Kinetics and mechanism of anodic oxidation of nitrite ion in nitrate melts on platinum electrodes |
| title |
Kinetics and mechanism of anodic oxidation of nitrite ion in nitrate melts on platinum electrodes |
| spellingShingle |
Kinetics and mechanism of anodic oxidation of nitrite ion in nitrate melts on platinum electrodes Martins, María Elisa Ciencias Exactas Química Electrochemical oxidation Platinum Kinetic parameters |
| title_short |
Kinetics and mechanism of anodic oxidation of nitrite ion in nitrate melts on platinum electrodes |
| title_full |
Kinetics and mechanism of anodic oxidation of nitrite ion in nitrate melts on platinum electrodes |
| title_fullStr |
Kinetics and mechanism of anodic oxidation of nitrite ion in nitrate melts on platinum electrodes |
| title_full_unstemmed |
Kinetics and mechanism of anodic oxidation of nitrite ion in nitrate melts on platinum electrodes |
| title_sort |
Kinetics and mechanism of anodic oxidation of nitrite ion in nitrate melts on platinum electrodes |
| dc.creator.none.fl_str_mv |
Martins, María Elisa Calandra, Alfredo J. Arvia, Alejandro Jorge |
| author |
Martins, María Elisa |
| author_facet |
Martins, María Elisa 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 oxidation Platinum Kinetic parameters |
| topic |
Ciencias Exactas Química Electrochemical oxidation Platinum Kinetic parameters |
| dc.description.none.fl_txt_mv |
The electrochemical oxidation of nitrite ion in KNO<sub>3</sub>-NaNO<sub>3</sub> eutectic melt on a platinum rotating disk electrode has been studied in the temperature range 247 to 312°C. The current/voltage curves comprise at least two regions. At high overvoltages the process is under a net convective diffusion control whereas at low ones the kinetics of the electrode process involves both convective diffusion and activation-polarization terms. From the current/voltage curves the kinetic parameters of each contribution are evaluated as well as the diffusion coefficient of nitrite ion in the melt. The electrode process is discussed in terms of the over-all reaction NO<sub>2</sub>− → NO<sub>2</sub> + e and of the reaction mechanisms previously postulated, where the initial electron-transfer step becomes rate-determining as the nitrite ion concentration diminishes. The results are compared to those obtained with the pure nitrite melt. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas |
| description |
The electrochemical oxidation of nitrite ion in KNO<sub>3</sub>-NaNO<sub>3</sub> eutectic melt on a platinum rotating disk electrode has been studied in the temperature range 247 to 312°C. The current/voltage curves comprise at least two regions. At high overvoltages the process is under a net convective diffusion control whereas at low ones the kinetics of the electrode process involves both convective diffusion and activation-polarization terms. From the current/voltage curves the kinetic parameters of each contribution are evaluated as well as the diffusion coefficient of nitrite ion in the melt. The electrode process is discussed in terms of the over-all reaction NO<sub>2</sub>− → NO<sub>2</sub> + e and of the reaction mechanisms previously postulated, where the initial electron-transfer step becomes rate-determining as the nitrite ion concentration diminishes. The results are compared to those obtained with the pure nitrite melt. |
| publishDate |
1970 |
| dc.date.none.fl_str_mv |
1970 |
| 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/10915/121502 |
| url |
http://sedici.unlp.edu.ar/handle/10915/121502 |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0013-4686 info:eu-repo/semantics/altIdentifier/doi/10.1016/0013-4686(70)90012-5 |
| 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 111-126 |
| 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_ |
1846064264100446208 |
| score |
13.22299 |