Corrosion Inhibition of Aluminium by Treculia Africana Leaves Extract in Acid Medium

Detalhes bibliográficos
Autor(a) principal: Ejikeme,P.M.
Data de Publicação: 2012
Outros Autores: Umana,S.G., Onukwuli,O.D.
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=S0872-19042012000500002
Resumo: The inhibitive effect of Treculia Africana leaves extract (TALE) in the corrosion of aluminium in HCl solution was studied using weight loss and thermometric methods at 30-60 °C. The results showed that TALE acted as a corrosion inhibitor of aluminium in HCl. Inhibition efficiency increased with increase in TALE concentration, but decreased with increase in temperature. TALE interaction with the metal surface was found to obey Freundlich and El-Awady adsorption isotherms. The obtained heats of adsorption values were negative. A phenomenon of physical adsorption is proposed for the adsorption behavior of TALE.
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spelling Corrosion Inhibition of Aluminium by Treculia Africana Leaves Extract in Acid Mediumweight lossaluminiumheat of adsorptionactivation energyadsorption isothermThe inhibitive effect of Treculia Africana leaves extract (TALE) in the corrosion of aluminium in HCl solution was studied using weight loss and thermometric methods at 30-60 °C. The results showed that TALE acted as a corrosion inhibitor of aluminium in HCl. Inhibition efficiency increased with increase in TALE concentration, but decreased with increase in temperature. TALE interaction with the metal surface was found to obey Freundlich and El-Awady adsorption isotherms. The obtained heats of adsorption values were negative. A phenomenon of physical adsorption is proposed for the adsorption behavior of TALE.Sociedade Portuguesa de Electroquímica2012-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042012000500002Portugaliae Electrochimica Acta v.30 n.5 2012reponame: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=S0872-19042012000500002Ejikeme,P.M.Umana,S.G.Onukwuli,O.D.info:eu-repo/semantics/openAccess2024-02-06T17:07:11Zoai:scielo:S0872-19042012000500002Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:12.906172Repositório 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 Corrosion Inhibition of Aluminium by Treculia Africana Leaves Extract in Acid Medium
title Corrosion Inhibition of Aluminium by Treculia Africana Leaves Extract in Acid Medium
spellingShingle Corrosion Inhibition of Aluminium by Treculia Africana Leaves Extract in Acid Medium
Ejikeme,P.M.
weight loss
aluminium
heat of adsorption
activation energy
adsorption isotherm
title_short Corrosion Inhibition of Aluminium by Treculia Africana Leaves Extract in Acid Medium
title_full Corrosion Inhibition of Aluminium by Treculia Africana Leaves Extract in Acid Medium
title_fullStr Corrosion Inhibition of Aluminium by Treculia Africana Leaves Extract in Acid Medium
title_full_unstemmed Corrosion Inhibition of Aluminium by Treculia Africana Leaves Extract in Acid Medium
title_sort Corrosion Inhibition of Aluminium by Treculia Africana Leaves Extract in Acid Medium
author Ejikeme,P.M.
author_facet Ejikeme,P.M.
Umana,S.G.
Onukwuli,O.D.
author_role author
author2 Umana,S.G.
Onukwuli,O.D.
author2_role author
author
dc.contributor.author.fl_str_mv Ejikeme,P.M.
Umana,S.G.
Onukwuli,O.D.
dc.subject.por.fl_str_mv weight loss
aluminium
heat of adsorption
activation energy
adsorption isotherm
topic weight loss
aluminium
heat of adsorption
activation energy
adsorption isotherm
description The inhibitive effect of Treculia Africana leaves extract (TALE) in the corrosion of aluminium in HCl solution was studied using weight loss and thermometric methods at 30-60 °C. The results showed that TALE acted as a corrosion inhibitor of aluminium in HCl. Inhibition efficiency increased with increase in TALE concentration, but decreased with increase in temperature. TALE interaction with the metal surface was found to obey Freundlich and El-Awady adsorption isotherms. The obtained heats of adsorption values were negative. A phenomenon of physical adsorption is proposed for the adsorption behavior of TALE.
publishDate 2012
dc.date.none.fl_str_mv 2012-09-01
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=S0872-19042012000500002
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042012000500002
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042012000500002
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.30 n.5 2012
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
repository.mail.fl_str_mv
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