Inhibition of the Corrosion of Zinc in 0.01 - 0.04 M H2SO4 by Erythromycin

Detalhes bibliográficos
Autor(a) principal: Eddy,N.O.
Data de Publicação: 2010
Outros Autores: Odoemelam,S.A., Ogoko,E.C., Ita,B.I.
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=S0872-19042010000100002
Resumo: Inhibition of the corrosion of zinc in 0.01 to 0.0 4 M H2SO4 by erythromycin was studied using weight loss and hydrogen evolution methods. The results obtained indicate that erythromycin is a good adsorption inhibitor for the corrosion of zinc in H2SO4 solutions. The inhibition efficiency of erythromycin increases with increasing concentration but decreases with increase in temperature. Thermodynamic and adsorption studies reveal that the adsorption of erythromycin on zinc surface is exothermic, spontaneous and is characterised with increasing degree of orderliness. The adsorption characteristics of the inhibitor are best described by the Langmuir adsorption model. From the variation of inhibition efficiency with temperature and the calculated values of the activation and free energies (which are within the limits expected for physical adsorption), we propose that the adsorption of erythromycin on zinc surface is consistent with the mechanism of physical adsorption.
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spelling Inhibition of the Corrosion of Zinc in 0.01 - 0.04 M H2SO4 by Erythromycincorrosion inhibitionZn, H2SO4erythromycinInhibition of the corrosion of zinc in 0.01 to 0.0 4 M H2SO4 by erythromycin was studied using weight loss and hydrogen evolution methods. The results obtained indicate that erythromycin is a good adsorption inhibitor for the corrosion of zinc in H2SO4 solutions. The inhibition efficiency of erythromycin increases with increasing concentration but decreases with increase in temperature. Thermodynamic and adsorption studies reveal that the adsorption of erythromycin on zinc surface is exothermic, spontaneous and is characterised with increasing degree of orderliness. The adsorption characteristics of the inhibitor are best described by the Langmuir adsorption model. From the variation of inhibition efficiency with temperature and the calculated values of the activation and free energies (which are within the limits expected for physical adsorption), we propose that the adsorption of erythromycin on zinc surface is consistent with the mechanism of physical adsorption.Sociedade Portuguesa de Electroquímica2010-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042010000100002Portugaliae Electrochimica Acta v.28 n.1 2010reponame: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=S0872-19042010000100002Eddy,N.O.Odoemelam,S.A.Ogoko,E.C.Ita,B.I.info:eu-repo/semantics/openAccess2024-02-06T17:07:03Zoai:scielo:S0872-19042010000100002Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:08.380334Repositório 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 Inhibition of the Corrosion of Zinc in 0.01 - 0.04 M H2SO4 by Erythromycin
title Inhibition of the Corrosion of Zinc in 0.01 - 0.04 M H2SO4 by Erythromycin
spellingShingle Inhibition of the Corrosion of Zinc in 0.01 - 0.04 M H2SO4 by Erythromycin
Eddy,N.O.
corrosion inhibition
Zn, H2SO4
erythromycin
title_short Inhibition of the Corrosion of Zinc in 0.01 - 0.04 M H2SO4 by Erythromycin
title_full Inhibition of the Corrosion of Zinc in 0.01 - 0.04 M H2SO4 by Erythromycin
title_fullStr Inhibition of the Corrosion of Zinc in 0.01 - 0.04 M H2SO4 by Erythromycin
title_full_unstemmed Inhibition of the Corrosion of Zinc in 0.01 - 0.04 M H2SO4 by Erythromycin
title_sort Inhibition of the Corrosion of Zinc in 0.01 - 0.04 M H2SO4 by Erythromycin
author Eddy,N.O.
author_facet Eddy,N.O.
Odoemelam,S.A.
Ogoko,E.C.
Ita,B.I.
author_role author
author2 Odoemelam,S.A.
Ogoko,E.C.
Ita,B.I.
author2_role author
author
author
dc.contributor.author.fl_str_mv Eddy,N.O.
Odoemelam,S.A.
Ogoko,E.C.
Ita,B.I.
dc.subject.por.fl_str_mv corrosion inhibition
Zn, H2SO4
erythromycin
topic corrosion inhibition
Zn, H2SO4
erythromycin
description Inhibition of the corrosion of zinc in 0.01 to 0.0 4 M H2SO4 by erythromycin was studied using weight loss and hydrogen evolution methods. The results obtained indicate that erythromycin is a good adsorption inhibitor for the corrosion of zinc in H2SO4 solutions. The inhibition efficiency of erythromycin increases with increasing concentration but decreases with increase in temperature. Thermodynamic and adsorption studies reveal that the adsorption of erythromycin on zinc surface is exothermic, spontaneous and is characterised with increasing degree of orderliness. The adsorption characteristics of the inhibitor are best described by the Langmuir adsorption model. From the variation of inhibition efficiency with temperature and the calculated values of the activation and free energies (which are within the limits expected for physical adsorption), we propose that the adsorption of erythromycin on zinc surface is consistent with the mechanism of physical adsorption.
publishDate 2010
dc.date.none.fl_str_mv 2010-01-01
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=S0872-19042010000100002
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042010000100002
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042010000100002
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.28 n.1 2010
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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