Kinetics and mechanism of “reduced CO<sub>2</sub>” electrooxidation on electrodispersed platinum in different acid solutions

The electrooxidation of “reduced CO<sub>2</sub>” electroadsorbates on electrodispersed platinum electrodes has been investigated in 0.05 M HClO<sub>4</sub>, 1 M HClO4, 0.5 M H<sub>2</sub>SO<sub>4</sub> and 1 M H<sub>3</sub>PO<sub>4<...

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Detalles Bibliográficos
Autores principales: Marcos, M. L., González Velasco, J., Vara, J. M., Giordano, M. C., Arvia, Alejandro Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 1989
Materias:
Ciencias Exactas
Química
Electrooxidation
CO2
Kinetics
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/121661
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-121661
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
Electrooxidation
CO2
Kinetics
spellingShingle Ciencias Exactas
Química
Electrooxidation
CO2
Kinetics
Marcos, M. L.
González Velasco, J.
Vara, J. M.
Giordano, M. C.
Arvia, Alejandro Jorge
Kinetics and mechanism of “reduced CO<sub>2</sub>” electrooxidation on electrodispersed platinum in different acid solutions
topic_facet Ciencias Exactas
Química
Electrooxidation
CO2
Kinetics
description The electrooxidation of “reduced CO<sub>2</sub>” electroadsorbates on electrodispersed platinum electrodes has been investigated in 0.05 M HClO<sub>4</sub>, 1 M HClO4, 0.5 M H<sub>2</sub>SO<sub>4</sub> and 1 M H<sub>3</sub>PO<sub>4</sub> at 25° C through voltammetry and potential step techniques. The overall reaction comprises three distinguishable processes, namely a first order triggering process, and two second order surface processes. The latter are influenced remarkably by the solution composition (anions). The second order reaction mechanism involves two distinguishable “ reduced CO<sub>2</sub>” electroadsorbates which react independently with the OH species formed from H<sub>2</sub>O electrooxidation on the bare platinum sites as the reaction proceeds. An interaction term has to be included in the rate equations to account for the experimental results. The mechanistic interpretation accounts for the values of the number of electrons per site ranging from 1 to 2.
format Articulo
Articulo
author Marcos, M. L.
González Velasco, J.
Vara, J. M.
Giordano, M. C.
Arvia, Alejandro Jorge
author_facet Marcos, M. L.
González Velasco, J.
Vara, J. M.
Giordano, M. C.
Arvia, Alejandro Jorge
author_sort Marcos, M. L.
title Kinetics and mechanism of “reduced CO<sub>2</sub>” electrooxidation on electrodispersed platinum in different acid solutions
title_short Kinetics and mechanism of “reduced CO<sub>2</sub>” electrooxidation on electrodispersed platinum in different acid solutions
title_full Kinetics and mechanism of “reduced CO<sub>2</sub>” electrooxidation on electrodispersed platinum in different acid solutions
title_fullStr Kinetics and mechanism of “reduced CO<sub>2</sub>” electrooxidation on electrodispersed platinum in different acid solutions
title_full_unstemmed Kinetics and mechanism of “reduced CO<sub>2</sub>” electrooxidation on electrodispersed platinum in different acid solutions
title_sort kinetics and mechanism of “reduced co<sub>2</sub>” electrooxidation on electrodispersed platinum in different acid solutions
publishDate 1989
url http://sedici.unlp.edu.ar/handle/10915/121661
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bdutipo_str Repositorios
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