The oxidation of formaldehyde on high overvoltage DSA type electrodes
Autor(a) principal: | |
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Data de Publicação: | 2000 |
Outros Autores: | , , , , , , , |
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=S0103-50532000000100004 |
Resumo: | The electrochemical oxidation of formaldehyde is studied on dimensionally stable anodes prepared by thermal decomposition of precursors (the corresponding chlorides). The working electrodes used were: Ti/Ir0.3Ti0.7O2, Ti/Ru0.3Ti0.7O2 and Ti/Ir0.2Ru0.2Ti0.6O2. The electrolyses were performed galvanostatically in a filter press cell with 0.5 mol L-1 H2SO4 solutions with initial formaldehyde concentration equal to 100 mmol L-1. The concentration of formaldehyde decreases fast with the electrolysis time, with the ternary anode (Ir + Ru + Ti) presenting the best performance for this step. The anode containing only Ir, despite presenting the higher superficial charge, is the one with the lowest electrocatalytic activity. For the formic acid oxidation step, the presence of iridium in the anode composition does not promote the process, the anode containing only ruthenium being the most effective for this step. |
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The oxidation of formaldehyde on high overvoltage DSA type electrodesformaldehydeelectrooxidationDSAoxidesThe electrochemical oxidation of formaldehyde is studied on dimensionally stable anodes prepared by thermal decomposition of precursors (the corresponding chlorides). The working electrodes used were: Ti/Ir0.3Ti0.7O2, Ti/Ru0.3Ti0.7O2 and Ti/Ir0.2Ru0.2Ti0.6O2. The electrolyses were performed galvanostatically in a filter press cell with 0.5 mol L-1 H2SO4 solutions with initial formaldehyde concentration equal to 100 mmol L-1. The concentration of formaldehyde decreases fast with the electrolysis time, with the ternary anode (Ir + Ru + Ti) presenting the best performance for this step. The anode containing only Ir, despite presenting the higher superficial charge, is the one with the lowest electrocatalytic activity. For the formic acid oxidation step, the presence of iridium in the anode composition does not promote the process, the anode containing only ruthenium being the most effective for this step.Sociedade Brasileira de Química2000-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532000000100004Journal of the Brazilian Chemical Society v.11 n.1 2000reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532000000100004info:eu-repo/semantics/openAccessMotheo,Artur J.Gonzalez,Ernesto R.Tremiliosi-Filho,GermanoOlivi,PauloAndrade,Adalgisa R. deKokoh,BonifaceLéger,Jean-MichelBelgsir,El MustaphaLamy,Claudeeng2000-06-01T00:00:00Zoai:scielo:S0103-50532000000100004Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2000-06-01T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
The oxidation of formaldehyde on high overvoltage DSA type electrodes |
title |
The oxidation of formaldehyde on high overvoltage DSA type electrodes |
spellingShingle |
The oxidation of formaldehyde on high overvoltage DSA type electrodes Motheo,Artur J. formaldehyde electrooxidation DSA oxides |
title_short |
The oxidation of formaldehyde on high overvoltage DSA type electrodes |
title_full |
The oxidation of formaldehyde on high overvoltage DSA type electrodes |
title_fullStr |
The oxidation of formaldehyde on high overvoltage DSA type electrodes |
title_full_unstemmed |
The oxidation of formaldehyde on high overvoltage DSA type electrodes |
title_sort |
The oxidation of formaldehyde on high overvoltage DSA type electrodes |
author |
Motheo,Artur J. |
author_facet |
Motheo,Artur J. Gonzalez,Ernesto R. Tremiliosi-Filho,Germano Olivi,Paulo Andrade,Adalgisa R. de Kokoh,Boniface Léger,Jean-Michel Belgsir,El Mustapha Lamy,Claude |
author_role |
author |
author2 |
Gonzalez,Ernesto R. Tremiliosi-Filho,Germano Olivi,Paulo Andrade,Adalgisa R. de Kokoh,Boniface Léger,Jean-Michel Belgsir,El Mustapha Lamy,Claude |
author2_role |
author author author author author author author author |
dc.contributor.author.fl_str_mv |
Motheo,Artur J. Gonzalez,Ernesto R. Tremiliosi-Filho,Germano Olivi,Paulo Andrade,Adalgisa R. de Kokoh,Boniface Léger,Jean-Michel Belgsir,El Mustapha Lamy,Claude |
dc.subject.por.fl_str_mv |
formaldehyde electrooxidation DSA oxides |
topic |
formaldehyde electrooxidation DSA oxides |
description |
The electrochemical oxidation of formaldehyde is studied on dimensionally stable anodes prepared by thermal decomposition of precursors (the corresponding chlorides). The working electrodes used were: Ti/Ir0.3Ti0.7O2, Ti/Ru0.3Ti0.7O2 and Ti/Ir0.2Ru0.2Ti0.6O2. The electrolyses were performed galvanostatically in a filter press cell with 0.5 mol L-1 H2SO4 solutions with initial formaldehyde concentration equal to 100 mmol L-1. The concentration of formaldehyde decreases fast with the electrolysis time, with the ternary anode (Ir + Ru + Ti) presenting the best performance for this step. The anode containing only Ir, despite presenting the higher superficial charge, is the one with the lowest electrocatalytic activity. For the formic acid oxidation step, the presence of iridium in the anode composition does not promote the process, the anode containing only ruthenium being the most effective for this step. |
publishDate |
2000 |
dc.date.none.fl_str_mv |
2000-02-01 |
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=S0103-50532000000100004 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532000000100004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50532000000100004 |
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.11 n.1 2000 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 |
_version_ |
1750318163826835456 |