Mechanistic implications of zinc(II) ions on the degradation of phenol by the fenton reaction

Detalhes bibliográficos
Autor(a) principal: Friedrich,Leidi Cecilia
Data de Publicação: 2012
Outros Autores: Mendes,Maria Anita, Silva,Volnir Oliveira, Zanta,Carmem Lúcia P. S., Machulek Jr.,Amilcar, Quina,Frank Herbert
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532012000700022
Resumo: A study of the interference of Zn2+ ions on phenol degradation by Fenton reaction (Fe2+/Fe3+ + H2O2) is reported. One of the first intermediates formed in the reaction, catechol, can reduce Fe3+ to Fe2+ and, in the presence of H2O2 initiates an efficient catalytic redox cycle. In the initial stages of the reaction, this catechol-mediated cycle becomes the principal route of thermal degradation of phenol and its oxidation products. The Zn2+ ion addition enhances the persistence time of catechol, probably by stabilization of the corresponding semiquinone radical via complexation.
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spelling Mechanistic implications of zinc(II) ions on the degradation of phenol by the fenton reactionphenolZn2+ ionsFenton reactionA study of the interference of Zn2+ ions on phenol degradation by Fenton reaction (Fe2+/Fe3+ + H2O2) is reported. One of the first intermediates formed in the reaction, catechol, can reduce Fe3+ to Fe2+ and, in the presence of H2O2 initiates an efficient catalytic redox cycle. In the initial stages of the reaction, this catechol-mediated cycle becomes the principal route of thermal degradation of phenol and its oxidation products. The Zn2+ ion addition enhances the persistence time of catechol, probably by stabilization of the corresponding semiquinone radical via complexation.Sociedade Brasileira de Química2012-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532012000700022Journal of the Brazilian Chemical Society v.23 n.7 2012reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532012000700022info:eu-repo/semantics/openAccessFriedrich,Leidi CeciliaMendes,Maria AnitaSilva,Volnir OliveiraZanta,Carmem Lúcia P. S.Machulek Jr.,AmilcarQuina,Frank Herberteng2012-08-06T00:00:00Zoai:scielo:S0103-50532012000700022Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2012-08-06T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Mechanistic implications of zinc(II) ions on the degradation of phenol by the fenton reaction
title Mechanistic implications of zinc(II) ions on the degradation of phenol by the fenton reaction
spellingShingle Mechanistic implications of zinc(II) ions on the degradation of phenol by the fenton reaction
Friedrich,Leidi Cecilia
phenol
Zn2+ ions
Fenton reaction
title_short Mechanistic implications of zinc(II) ions on the degradation of phenol by the fenton reaction
title_full Mechanistic implications of zinc(II) ions on the degradation of phenol by the fenton reaction
title_fullStr Mechanistic implications of zinc(II) ions on the degradation of phenol by the fenton reaction
title_full_unstemmed Mechanistic implications of zinc(II) ions on the degradation of phenol by the fenton reaction
title_sort Mechanistic implications of zinc(II) ions on the degradation of phenol by the fenton reaction
author Friedrich,Leidi Cecilia
author_facet Friedrich,Leidi Cecilia
Mendes,Maria Anita
Silva,Volnir Oliveira
Zanta,Carmem Lúcia P. S.
Machulek Jr.,Amilcar
Quina,Frank Herbert
author_role author
author2 Mendes,Maria Anita
Silva,Volnir Oliveira
Zanta,Carmem Lúcia P. S.
Machulek Jr.,Amilcar
Quina,Frank Herbert
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Friedrich,Leidi Cecilia
Mendes,Maria Anita
Silva,Volnir Oliveira
Zanta,Carmem Lúcia P. S.
Machulek Jr.,Amilcar
Quina,Frank Herbert
dc.subject.por.fl_str_mv phenol
Zn2+ ions
Fenton reaction
topic phenol
Zn2+ ions
Fenton reaction
description A study of the interference of Zn2+ ions on phenol degradation by Fenton reaction (Fe2+/Fe3+ + H2O2) is reported. One of the first intermediates formed in the reaction, catechol, can reduce Fe3+ to Fe2+ and, in the presence of H2O2 initiates an efficient catalytic redox cycle. In the initial stages of the reaction, this catechol-mediated cycle becomes the principal route of thermal degradation of phenol and its oxidation products. The Zn2+ ion addition enhances the persistence time of catechol, probably by stabilization of the corresponding semiquinone radical via complexation.
publishDate 2012
dc.date.none.fl_str_mv 2012-07-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532012000700022
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532012000700022
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532012000700022
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.23 n.7 2012
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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