Considerations on the hydrogen peroxide electrogeneration.

dc.creatorRagnini, CAR
dc.creatorDi Iglia, RA
dc.creatorBertazzoli, R
dc.date2001
dc.dateMAR-APR
dc.date2014-12-02T16:26:35Z
dc.date2015-11-26T16:31:43Z
dc.date2014-12-02T16:26:35Z
dc.date2015-11-26T16:31:43Z
dc.date.accessioned2018-03-28T23:12:54Z
dc.date.available2018-03-28T23:12:54Z
dc.identifierQuimica Nova. Soc Brasileira Quimica, v. 24, n. 2, n. 252, n. 256, 2001.
dc.identifier0100-4042
dc.identifierWOS:000167572000017
dc.identifier10.1590/S0100-40422001000200017
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/56798
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/56798
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/56798
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1270293
dc.descriptionThis paper presents some results that may be used as previous considerations to a hydrogen peroxide electrogeneration process design. A kinetic study of oxygen dissolution in aqueous solution is carried out and rate constants for oxygen dissolution are calculated. Voltammetric experiments on vitreous carbon cathode shown that the low saturation concentration drives the oxygen reduction process to a mass transfer controlled process which exhibits low values of limiting currents. Results have shown that the hydrogen peroxide formation and its decomposition to water are separated by 400 mV on the vitreous carbon surface. Diffusion coefficients for oxygen and hydrogen peroxide are calculated using data taken from Levich and Tafel plots. In a series of bulk electrolysis experiments hydrogen peroxide was electrogenerated at several potential values, and concentration profiles as a function of the electrical charged passed were obtained. Data shown that, since limiting current plateaus are poorly defined onto reticulated vitreous carbon, cathodic efficiency may be a good criterion for choosing the potential value in which hydrogen peroxide electrogeneration should be carried out.
dc.description24
dc.description2
dc.description252
dc.description256
dc.languagept
dc.publisherSoc Brasileira Quimica
dc.publisherSao Paulo
dc.publisherBrasil
dc.relationQuimica Nova
dc.relationQuim. Nova
dc.rightsaberto
dc.sourceWeb of Science
dc.subjecthydrogen peroxide
dc.subjectelectrosynthesis of hydrogen peroxide
dc.subjectoxygen reduction
dc.subjectvitreous carbon
dc.subjectkinetics of oxygen dissolution
dc.subjectPtfe O-2-fed Cathode
dc.subjectOxidative-degradation
dc.subjectFormaldehyde
dc.subjectAniline
dc.subjectRemoval
dc.subjectCell
dc.titleConsiderations on the hydrogen peroxide electrogeneration.
dc.typeArtículos de revistas


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