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Electrochemical behaviour of platinum in hydrogen peroxide solution (1963); Comportement electrochimique du platine en solution d'eau oxygene (1963)

Abstract

The relative stability of hydrogen peroxide in aqueous solution at 25 deg. C, allows its amperometric determination from the theory, using either its cathodic reduction or its anodic oxidation. The cathodic reduction yields a wave on a platinum electrode only when some oxygen is present in the solution. It cannot, therefore, be used for electrochemical determination. On the other hand, the anodic oxidation on platinum produces a wave which might be used. However, a passivation of platinum occurs at the same time. This passivation process is studied by means of potentio-kinetic, potentio-static, intensio-static curves and of pH measurements in the vicinity of the anode. A mechanism for passivation is presented, which takes into account the role of hydrogen peroxide as a reducing agent. This passivation rules out any analytical application of the oxidation reaction of hydrogen peroxide. (author) [French] La stabilite relative de l'eau oxygenee en solution aqueuse a 25 deg. C permet d'envisager theoriquement son dosage par amperometrie, en utilisant soit sa reduction cathodique, soit son oxydation anodique. La reduction cathodique ne donne lieu a une vague sur electrode de platine qu'en presence d'oxygene dissous. Il n'est donc pas utilisable pour un dosage. L'oxydation anodique sur platine donne une  More>>
Authors:
Prost, G H [1] 
  1. Commisariat a l'Energie Atomique, Grenoble (France). Centre d'Etudes Nucleaires
Publication Date:
Jun 15, 1963
Product Type:
Thesis/Dissertation
Report Number:
CEA-R-2334
Resource Relation:
Other Information: TH: These sciences; 48 refs
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AMPEROMETRY; AQUEOUS SOLUTIONS; CHEMICAL REACTION KINETICS; ELECTROCHEMICAL CORROSION; ELECTROCHEMISTRY; HYDROGEN PEROXIDE; PASSIVATION; PLATINUM; RADIOLYSIS; REACTOR MONITORING SYSTEMS
OSTI ID:
20818015
Research Organizations:
CEA Grenoble, 38 (France); Faculte des Sciences de l'Universite de Grenoble, 38 (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR06R2334118144
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
64 pages
Announcement Date:
Dec 30, 2006

Citation Formats

Prost, G H. Electrochemical behaviour of platinum in hydrogen peroxide solution (1963); Comportement electrochimique du platine en solution d'eau oxygene (1963). France: N. p., 1963. Web.
Prost, G H. Electrochemical behaviour of platinum in hydrogen peroxide solution (1963); Comportement electrochimique du platine en solution d'eau oxygene (1963). France.
Prost, G H. 1963. "Electrochemical behaviour of platinum in hydrogen peroxide solution (1963); Comportement electrochimique du platine en solution d'eau oxygene (1963)." France.
@misc{etde_20818015,
title = {Electrochemical behaviour of platinum in hydrogen peroxide solution (1963); Comportement electrochimique du platine en solution d'eau oxygene (1963)}
author = {Prost, G H}
abstractNote = {The relative stability of hydrogen peroxide in aqueous solution at 25 deg. C, allows its amperometric determination from the theory, using either its cathodic reduction or its anodic oxidation. The cathodic reduction yields a wave on a platinum electrode only when some oxygen is present in the solution. It cannot, therefore, be used for electrochemical determination. On the other hand, the anodic oxidation on platinum produces a wave which might be used. However, a passivation of platinum occurs at the same time. This passivation process is studied by means of potentio-kinetic, potentio-static, intensio-static curves and of pH measurements in the vicinity of the anode. A mechanism for passivation is presented, which takes into account the role of hydrogen peroxide as a reducing agent. This passivation rules out any analytical application of the oxidation reaction of hydrogen peroxide. (author) [French] La stabilite relative de l'eau oxygenee en solution aqueuse a 25 deg. C permet d'envisager theoriquement son dosage par amperometrie, en utilisant soit sa reduction cathodique, soit son oxydation anodique. La reduction cathodique ne donne lieu a une vague sur electrode de platine qu'en presence d'oxygene dissous. Il n'est donc pas utilisable pour un dosage. L'oxydation anodique sur platine donne une vague theoriquement utilisable mais s'accompagne d'une passivation du platine. Le processus de la passivation est etudie au moyen des courbes potentiocinetiques, potentiostatiques, intensiostatiques et par une mesure des variations de pH au voisinage de l'anode. On propose un mecanisme de passivation en tenant compte du role activant de l'eau oxygenee. Cette passivation interdit toute application analytique de la reaction d'oxydation de l'eau oxygenee. (auteur)}
place = {France}
year = {1963}
month = {Jun}
}