Electrochemistry of fuming sulphuric acids : III. Mechanism of the cathodic reactions on platinum

The cathodic potential-decay process on platinum electrodes in oleums has been investigated by means of a rotating disk. The non-stady parameters are compared with those already reported under steady-state conditions. Both results are discussed in terms of a general reaction mechanism comprising var...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Arvia, Alejandro Jorge, Carrozza, Jesús Simón, Garrera, H. A.
Formato: Articulo
Lenguaje:Inglés
Publicado: 1971
Materias:
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/119938
https://www.sciencedirect.com/science/article/abs/pii/0013468671851290
Aporte de:
Descripción
Sumario:The cathodic potential-decay process on platinum electrodes in oleums has been investigated by means of a rotating disk. The non-stady parameters are compared with those already reported under steady-state conditions. Both results are discussed in terms of a general reaction mechanism comprising various consecutive as well as alternative steps, considering that the main cathodic product is sulphur dioxide. The SO<sub>3</sub>-containing species acts as a depolarizer by reacting with hydrogen atoms adsorbed on the electrode surface.