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Title

Oxidacion electroquimica de plata y cobre en medio acuoso básico y en hidróxidos fundidos

Other TitlesElectrochemical Oxidation of Silver and Copper in Aqueous Basic Media and in Fused Hydroxide Electrolytes
AuthorsTejada Rosales, E. M.; Casañ Pastor, Nieves CSIC ORCID; Gómez-Romero, P. CSIC ORCID
KeywordsOxidacíon electroquímica
Hidróxidos fundidos
Óxidos de plata y cobre
Electrooxidation
Molten hydroxides
Silver-copper oxides
Issue DateMar-2000
PublisherSociedad Española de Cerámica y Vidrio
CitationBoletín de la Sociedad Española de Cerámica y Vidrio 43(2): 220-223 (2004)
Abstract[ES]: En este trabajo se describe la oxidación anódico de electrodos de plata y de cobre en medios básicos. Se han utilizado tanto medios acuosos como hidróxidos fundidos (eutéctico NaOH/KOH). Los procesos de oxidación se han estudiado mediante voltametría cíclica y cronoamperometría, y las fases resultantes han sido caracterizadas por difracción de Rayos X. Los rangos de estabilidad encontrados para cada uno dependen del medio utilizado. Además de óxidos conocidos de cobre y de plata, se ha aislado un nuevo óxido de plata.
[EN]: The anodic oxidations of copper and silver electrodes in basic media are reported. Experiments were conducted both in aqueous NaOH solutions and in a flux of molten NaOH/KOH eutectic. The oxidation processes were studied by means of cyclic voltammetry and chronoamperometries and the phases obtained were systematically characterized by x-ray diffraction. The ranges of stability of each phase in the different media studied are reported. In addition to known oxides of copper or silver, a new silver oxide was isolated.
URIhttp://hdl.handle.net/10261/4477
ISSN0366-3175
Appears in Collections:(ICMAB) Artículos




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