Hydrogen evolution and dissolution on graphite electrodes in molten potassium bisulphate : II. Kinetics and mechanism of the reactions on porous graphite

The electrochemical evolution and dissolution of hydrogen in potassium bisulphate melt have been studied on porous graphite electrodes in the temperature range from 245–280°C. Kinetic parameters were obtained in the conventional way both for steady as well as non-steady conditions and are compared t...

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Detalles Bibliográficos
Autores principales: Balskus, Eduardo Juan, Triaca, Walter Enrique, Arvia, Alejandro Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 1972
Materias:
Ciencias Exactas
Química
Hydrogen
Electrochemical evolution
Kinetic parameters
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/121132
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-121132
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Química
Hydrogen
Electrochemical evolution
Kinetic parameters
spellingShingle Ciencias Exactas
Química
Hydrogen
Electrochemical evolution
Kinetic parameters
Balskus, Eduardo Juan
Triaca, Walter Enrique
Arvia, Alejandro Jorge
Hydrogen evolution and dissolution on graphite electrodes in molten potassium bisulphate : II. Kinetics and mechanism of the reactions on porous graphite
topic_facet Ciencias Exactas
Química
Hydrogen
Electrochemical evolution
Kinetic parameters
description The electrochemical evolution and dissolution of hydrogen in potassium bisulphate melt have been studied on porous graphite electrodes in the temperature range from 245–280°C. Kinetic parameters were obtained in the conventional way both for steady as well as non-steady conditions and are compared to those previously derived for dense graphite electrodes. The cathodic and anodic reactions are not straightforwardly complementary processes. The former is explained in terms of a conventional reaction mechanism for the hydrogen electrode involving either a hydrogen adatom combination reaction or a hydrogen ion plus adatom reaction as rate-determining. The anodic reaction is interpreted in terms of various possible mechanisms comprising a one-half order rate equation with respect to the hydrogen gas pressure. The most likely mechanism comprises a competition between the ionization of hydrogen adatoms and the oxidation of graphite at active sites located at the surface. Thermal effects are in agreement with the postulated reaction mechanisms.
format Articulo
Articulo
author Balskus, Eduardo Juan
Triaca, Walter Enrique
Arvia, Alejandro Jorge
author_facet Balskus, Eduardo Juan
Triaca, Walter Enrique
Arvia, Alejandro Jorge
author_sort Balskus, Eduardo Juan
title Hydrogen evolution and dissolution on graphite electrodes in molten potassium bisulphate : II. Kinetics and mechanism of the reactions on porous graphite
title_short Hydrogen evolution and dissolution on graphite electrodes in molten potassium bisulphate : II. Kinetics and mechanism of the reactions on porous graphite
title_full Hydrogen evolution and dissolution on graphite electrodes in molten potassium bisulphate : II. Kinetics and mechanism of the reactions on porous graphite
title_fullStr Hydrogen evolution and dissolution on graphite electrodes in molten potassium bisulphate : II. Kinetics and mechanism of the reactions on porous graphite
title_full_unstemmed Hydrogen evolution and dissolution on graphite electrodes in molten potassium bisulphate : II. Kinetics and mechanism of the reactions on porous graphite
title_sort hydrogen evolution and dissolution on graphite electrodes in molten potassium bisulphate : ii. kinetics and mechanism of the reactions on porous graphite
publishDate 1972
url http://sedici.unlp.edu.ar/handle/10915/121132
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