Electrochemical synthesis of hydrogen peroxide on oxygen-fed graphite/PTFE electrodes modified by 2-ethylanthraquinone

dc.creatorForti, JC
dc.creatorRocha, RS
dc.creatorLanza, MRV
dc.creatorBertazzoli, R
dc.date2007
dc.date42064
dc.date2014-11-18T12:52:16Z
dc.date2015-11-26T17:50:28Z
dc.date2014-11-18T12:52:16Z
dc.date2015-11-26T17:50:28Z
dc.date.accessioned2018-03-29T00:33:42Z
dc.date.available2018-03-29T00:33:42Z
dc.identifierJournal Of Electroanalytical Chemistry. Elsevier Science Sa, v. 601, n. 41671, n. 63, n. 67, 2007.
dc.identifier0022-0728
dc.identifierWOS:000245386200008
dc.identifier10.1016/j.jelechem.2006.10.023
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/65199
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/65199
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/65199
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1289689
dc.descriptionThis paper reports an investigation on the performance of a catalyzed H2O2 electrogencration process using a modified oxygen-fed graphite/PTFE electrodes in which the redox catalyst was incorporated into the graphitic mass. The organic redox catalyst chosen for the modification was 2-ethylanthraquinone (EAQ). The H2O2 electrogeneration rate was optimized relative to potential and catalyst concentration. Hydrogen peroxide formation rate on oxygen-fed graphite/PTFE was greatly improved by the presence of the organic redox catalyst and the overpotential for oxygen reduction was shifted more positive. During electrolysis, hydrogen peroxide electrogeneration reaction showed a pseudo-zero-order kinetics and apparent rate constants increased with EAQ concentration. For the electrodes containing 10% of EAQ, apparent rate constants were 30% higher at a potential 400 mV more positive when compared to the performance of a non catalyzed electrode. (c) 2006 Elsevier B.V. All rights reserved.
dc.description601
dc.description41671
dc.description63
dc.description67
dc.languageen
dc.publisherElsevier Science Sa
dc.publisherLausanne
dc.publisherSuíça
dc.relationJournal Of Electroanalytical Chemistry
dc.relationJ. Electroanal. Chem.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjecthydrogen peroxide
dc.subjectgas diffusion electrodes
dc.subject2-ethylanthraquinone
dc.subjectReticulated Vitreous Carbon
dc.subject3-phase Aqueous/organic/gaseous System
dc.subjectPtfe O-2-fed Cathode
dc.subjectMediated Formation
dc.subjectAcidic-solutions
dc.subject2-ethyl-9,10-anthraquinone Eaq
dc.subjectOxidative-degradation
dc.subjectDiffusion Cathode
dc.subjectAqueous-solutions
dc.subject2-phase Medium
dc.titleElectrochemical synthesis of hydrogen peroxide on oxygen-fed graphite/PTFE electrodes modified by 2-ethylanthraquinone
dc.typeArtículos de revistas


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