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https://hdl.handle.net/1822/49525
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Campo DC | Valor | Idioma |
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dc.contributor.author | Oliveira, Raquel Santos | por |
dc.contributor.author | Geraldo, Dulce | por |
dc.contributor.author | Bento, M. Fátima | por |
dc.date.accessioned | 2018-01-23T08:39:38Z | - |
dc.date.available | 2018-01-23T08:39:38Z | - |
dc.date.issued | 2014-07-20 | - |
dc.identifier.issn | 0013-4686 | por |
dc.identifier.uri | https://hdl.handle.net/1822/49525 | - |
dc.description.abstract | The rate of degradation of some aromatic compounds, benzoic acid, 2-hydroxybenzoic acid, 4-hydroxybenzoic acid and 2,3-hydroxybenzoic acid, by electrogenerated HO radicals is investigated. The effect of the addition of secondary species, that can either be a reaction product of the target compound or not is analysed. The presence of the actual reaction products is also considered. The action of these secondary species is integrated in a general model that accounts for the dependency of the anode coverage by HO radicals on the concentration and on the reactivity of HO radical scavengers. From the magnitude of the effect of competing reactions, the reactivity of the hydroxybenzoic acid derivatives was estimated as the product between the stoichiometric coefficients and the rate constants. A possible mechanistic interpretation is provided to explain the unexpected high values of the stoichiometric coefficients estimated that largely exceed the number of radicals required for the complete mineralization of the species. (C) 2014 Elsevier Ltd. All rights reserved. | por |
dc.description.sponsorship | - We would like to acknowledge the contribution of Prof. Paula M.T. Ferreira on the mechanistic interpretation of the HO radical stoichiometric coefficients. Thanks are due to FCT (Fundacao para a Ciencia e Tecnologia) and FEDER (European Fund for Regional Development)-COMPETE-QREN-EU for financial support to the Research Centre, CQ/UM [PEst-C/QUI/UI0686/2011 (FCOMP-01-0124-FEDER-022716)]. Raquel Oliveira thanks to FCT, POPH (Programa Operacional Potencial Humano) and FSE (Fundo Social Europeu) for the PhD Grant (SFRH/BD/64189/2009). | por |
dc.language.iso | eng | por |
dc.publisher | Pergamon-Elsevier Science Ltd | por |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F64189%2F2009/PT | por |
dc.rights | openAccess | por |
dc.subject | Aromatic compounds | por |
dc.subject | Hydroxyl radicals | por |
dc.subject | Kinetic model and competing reactions | por |
dc.title | Electrogenerated HO radical reactions: the role of competing reactions on the degradation kinetics of hydroxy-containing aromatic compounds | por |
dc.type | article | - |
dc.peerreviewed | yes | por |
oaire.citationStartPage | 19 | por |
oaire.citationEndPage | 26 | por |
oaire.citationVolume | 135 | por |
dc.date.updated | 2018-01-05T16:53:00Z | - |
dc.identifier.doi | 10.1016/j.electacta.2014.04.012 | por |
dc.description.publicationversion | info:eu-repo/semantics/publishedVersion | por |
dc.subject.wos | Science & Technology | - |
sdum.export.identifier | 2241 | - |
sdum.journal | Electrochimica Acta | por |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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manuscript_Repositorium.pdf | 9,41 MB | Adobe PDF | Ver/Abrir |