Ipomoea Involcrata as an Ecofriendly Inhibitor for Aluminium in Alkaline Medium
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000400008 |
Resumo: | The corrosion inhibition of aluminium by Ipomoea involcrata (IP) in 1 M NaOH was rapidly assessed using the gasometric technique at 30 and 60 ºC . Results obtained showed that Ipomoea involcrata acts as an inhibitor for aluminium corrosion in 1 M NaOH. Inhibition efficiency increased with increase in concentration of IP up to 55.0 % at 50 v/v% and decreased with increase in temperature. The adsorption of IP was in accord with Langmuir adsorption isotherm at the studied temperatures. A mechanism of physical adsorption is proposed from the calculated values of Ea ,Qads and ΔGads. |
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Ipomoea Involcrata as an Ecofriendly Inhibitor for Aluminium in Alkaline MediumIpomoea involcrataaluminiumcorrosioninhibitionadsorption isothermthermodynamicsThe corrosion inhibition of aluminium by Ipomoea involcrata (IP) in 1 M NaOH was rapidly assessed using the gasometric technique at 30 and 60 ºC . Results obtained showed that Ipomoea involcrata acts as an inhibitor for aluminium corrosion in 1 M NaOH. Inhibition efficiency increased with increase in concentration of IP up to 55.0 % at 50 v/v% and decreased with increase in temperature. The adsorption of IP was in accord with Langmuir adsorption isotherm at the studied temperatures. A mechanism of physical adsorption is proposed from the calculated values of Ea ,Qads and ΔGads.Sociedade Portuguesa de Electroquímica2009-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000400008Portugaliae Electrochimica Acta v.27 n.4 2009reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000400008Obot,I. B.Obi-Egbedi,N. O.info:eu-repo/semantics/openAccess2024-02-06T17:07:00Zoai:scielo:S0872-19042009000400008Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:07.304593Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Ipomoea Involcrata as an Ecofriendly Inhibitor for Aluminium in Alkaline Medium |
title |
Ipomoea Involcrata as an Ecofriendly Inhibitor for Aluminium in Alkaline Medium |
spellingShingle |
Ipomoea Involcrata as an Ecofriendly Inhibitor for Aluminium in Alkaline Medium Obot,I. B. Ipomoea involcrata aluminium corrosion inhibition adsorption isotherm thermodynamics |
title_short |
Ipomoea Involcrata as an Ecofriendly Inhibitor for Aluminium in Alkaline Medium |
title_full |
Ipomoea Involcrata as an Ecofriendly Inhibitor for Aluminium in Alkaline Medium |
title_fullStr |
Ipomoea Involcrata as an Ecofriendly Inhibitor for Aluminium in Alkaline Medium |
title_full_unstemmed |
Ipomoea Involcrata as an Ecofriendly Inhibitor for Aluminium in Alkaline Medium |
title_sort |
Ipomoea Involcrata as an Ecofriendly Inhibitor for Aluminium in Alkaline Medium |
author |
Obot,I. B. |
author_facet |
Obot,I. B. Obi-Egbedi,N. O. |
author_role |
author |
author2 |
Obi-Egbedi,N. O. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Obot,I. B. Obi-Egbedi,N. O. |
dc.subject.por.fl_str_mv |
Ipomoea involcrata aluminium corrosion inhibition adsorption isotherm thermodynamics |
topic |
Ipomoea involcrata aluminium corrosion inhibition adsorption isotherm thermodynamics |
description |
The corrosion inhibition of aluminium by Ipomoea involcrata (IP) in 1 M NaOH was rapidly assessed using the gasometric technique at 30 and 60 ºC . Results obtained showed that Ipomoea involcrata acts as an inhibitor for aluminium corrosion in 1 M NaOH. Inhibition efficiency increased with increase in concentration of IP up to 55.0 % at 50 v/v% and decreased with increase in temperature. The adsorption of IP was in accord with Langmuir adsorption isotherm at the studied temperatures. A mechanism of physical adsorption is proposed from the calculated values of Ea ,Qads and ΔGads. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000400008 |
url |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000400008 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000400008 |
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 Portuguesa de Electroquímica |
publisher.none.fl_str_mv |
Sociedade Portuguesa de Electroquímica |
dc.source.none.fl_str_mv |
Portugaliae Electrochimica Acta v.27 n.4 2009 reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799137290332667904 |