Cyclic voltammetric behaviour of dimensionally stable anodes in the presence of C1 - C3 aldehydes

Detalhes bibliográficos
Autor(a) principal: Malpass,Geoffroy R. P.
Data de Publicação: 2003
Outros Autores: Motheo,Artur J.
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=S0103-50532003000400023
Resumo: This work describes the cyclic voltammetry study of three aliphatic aldehydes: formaldehyde, acetaldehyde and propionaldehyde at dimensionally stable anodes (DSA®). Electrodes of nominal composition Ti/Ru0.3M0.7O2 (where M = Ti ou Sn) were used in 0.5 mol dm-3 H2SO4 in a filter-press cell. Both electrodes exhibit behaviour typical of such materials in the presence of formaldehyde. However, with acetaldehyde and propionaldehyde non-typical behaviour is observed. This is characterised by a fall in the normalised faradaic anodic charge (q nf) and also a decrease in the current density associated with the oxygen evolution reaction (OER). A possible reaction mechanism, considering the direct oxidation of the aldehyde at the electrode surface, is suggested.
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spelling Cyclic voltammetric behaviour of dimensionally stable anodes in the presence of C1 - C3 aldehydesformaldehydeacetaldehydepropionaldehydeelectrooxidationDSA®This work describes the cyclic voltammetry study of three aliphatic aldehydes: formaldehyde, acetaldehyde and propionaldehyde at dimensionally stable anodes (DSA®). Electrodes of nominal composition Ti/Ru0.3M0.7O2 (where M = Ti ou Sn) were used in 0.5 mol dm-3 H2SO4 in a filter-press cell. Both electrodes exhibit behaviour typical of such materials in the presence of formaldehyde. However, with acetaldehyde and propionaldehyde non-typical behaviour is observed. This is characterised by a fall in the normalised faradaic anodic charge (q nf) and also a decrease in the current density associated with the oxygen evolution reaction (OER). A possible reaction mechanism, considering the direct oxidation of the aldehyde at the electrode surface, is suggested.Sociedade Brasileira de Química2003-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000400023Journal of the Brazilian Chemical Society v.14 n.4 2003reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532003000400023info:eu-repo/semantics/openAccessMalpass,Geoffroy R. P.Motheo,Artur J.eng2003-09-15T00:00:00Zoai:scielo:S0103-50532003000400023Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2003-09-15T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Cyclic voltammetric behaviour of dimensionally stable anodes in the presence of C1 - C3 aldehydes
title Cyclic voltammetric behaviour of dimensionally stable anodes in the presence of C1 - C3 aldehydes
spellingShingle Cyclic voltammetric behaviour of dimensionally stable anodes in the presence of C1 - C3 aldehydes
Malpass,Geoffroy R. P.
formaldehyde
acetaldehyde
propionaldehyde
electrooxidation
DSA®
title_short Cyclic voltammetric behaviour of dimensionally stable anodes in the presence of C1 - C3 aldehydes
title_full Cyclic voltammetric behaviour of dimensionally stable anodes in the presence of C1 - C3 aldehydes
title_fullStr Cyclic voltammetric behaviour of dimensionally stable anodes in the presence of C1 - C3 aldehydes
title_full_unstemmed Cyclic voltammetric behaviour of dimensionally stable anodes in the presence of C1 - C3 aldehydes
title_sort Cyclic voltammetric behaviour of dimensionally stable anodes in the presence of C1 - C3 aldehydes
author Malpass,Geoffroy R. P.
author_facet Malpass,Geoffroy R. P.
Motheo,Artur J.
author_role author
author2 Motheo,Artur J.
author2_role author
dc.contributor.author.fl_str_mv Malpass,Geoffroy R. P.
Motheo,Artur J.
dc.subject.por.fl_str_mv formaldehyde
acetaldehyde
propionaldehyde
electrooxidation
DSA®
topic formaldehyde
acetaldehyde
propionaldehyde
electrooxidation
DSA®
description This work describes the cyclic voltammetry study of three aliphatic aldehydes: formaldehyde, acetaldehyde and propionaldehyde at dimensionally stable anodes (DSA®). Electrodes of nominal composition Ti/Ru0.3M0.7O2 (where M = Ti ou Sn) were used in 0.5 mol dm-3 H2SO4 in a filter-press cell. Both electrodes exhibit behaviour typical of such materials in the presence of formaldehyde. However, with acetaldehyde and propionaldehyde non-typical behaviour is observed. This is characterised by a fall in the normalised faradaic anodic charge (q nf) and also a decrease in the current density associated with the oxygen evolution reaction (OER). A possible reaction mechanism, considering the direct oxidation of the aldehyde at the electrode surface, is suggested.
publishDate 2003
dc.date.none.fl_str_mv 2003-08-01
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=S0103-50532003000400023
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000400023
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532003000400023
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.14 n.4 2003
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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