Synergistic Effect of Nizoral and Iodide Ions on the Corrosion Inhibition of Mild Steel in Sulphuric Acid Solution
Autor(a) principal: | |
---|---|
Data de Publicação: | 2009 |
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=S0872-19042009000500003 |
Resumo: | The corrosion rates in the presence of nizoral (NZR), an antifungal drug, as mild steel corrosion inhibitor in 0.1 M H2SO4 was measured by the weight loss method in the temperature range from 30 - 50 ºC. Results obtained revealed that NZR acts as an inhibitor for mild steel in sulphuric acid solution. Inhibition efficiency increased with increase in concentration of the inhibitor but decreased with increase in temperature. The addition of KI increased the inhibition of NZR to a considerable extent. The experimental results suggest that the presence of iodide ions in the solution stabilized the adsorption of Nizoral molecules on the mild steel surface thereby improving the inhibition efficiency of Nizoral. The adsorption characteristics of the inhibitor were approximated by Langmuir adsorption isotherm and kinetic/thermodynamic adsorption model of El-Awady et al. Mechanism of physical adsorption is proposed from the activation and thermodynamic parameters calculated. |
id |
RCAP_3d3a7f0c20c74366a9abecbd59ea2922 |
---|---|
oai_identifier_str |
oai:scielo:S0872-19042009000500003 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Synergistic Effect of Nizoral and Iodide Ions on the Corrosion Inhibition of Mild Steel in Sulphuric Acid Solutionnizoralmild steelcorrosion inhibitionadsorption isothermthermodynamicssulphuric acidThe corrosion rates in the presence of nizoral (NZR), an antifungal drug, as mild steel corrosion inhibitor in 0.1 M H2SO4 was measured by the weight loss method in the temperature range from 30 - 50 ºC. Results obtained revealed that NZR acts as an inhibitor for mild steel in sulphuric acid solution. Inhibition efficiency increased with increase in concentration of the inhibitor but decreased with increase in temperature. The addition of KI increased the inhibition of NZR to a considerable extent. The experimental results suggest that the presence of iodide ions in the solution stabilized the adsorption of Nizoral molecules on the mild steel surface thereby improving the inhibition efficiency of Nizoral. The adsorption characteristics of the inhibitor were approximated by Langmuir adsorption isotherm and kinetic/thermodynamic adsorption model of El-Awady et al. Mechanism of physical adsorption is proposed from the activation and thermodynamic parameters calculated.Sociedade Portuguesa de Electroquímica2009-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000500003Portugaliae Electrochimica Acta v.27 n.5 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=S0872-19042009000500003Obot,Ime B.info:eu-repo/semantics/openAccess2024-02-06T17:07:00Zoai:scielo:S0872-19042009000500003Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:07.485503Repositório 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 |
Synergistic Effect of Nizoral and Iodide Ions on the Corrosion Inhibition of Mild Steel in Sulphuric Acid Solution |
title |
Synergistic Effect of Nizoral and Iodide Ions on the Corrosion Inhibition of Mild Steel in Sulphuric Acid Solution |
spellingShingle |
Synergistic Effect of Nizoral and Iodide Ions on the Corrosion Inhibition of Mild Steel in Sulphuric Acid Solution Obot,Ime B. nizoral mild steel corrosion inhibition adsorption isotherm thermodynamics sulphuric acid |
title_short |
Synergistic Effect of Nizoral and Iodide Ions on the Corrosion Inhibition of Mild Steel in Sulphuric Acid Solution |
title_full |
Synergistic Effect of Nizoral and Iodide Ions on the Corrosion Inhibition of Mild Steel in Sulphuric Acid Solution |
title_fullStr |
Synergistic Effect of Nizoral and Iodide Ions on the Corrosion Inhibition of Mild Steel in Sulphuric Acid Solution |
title_full_unstemmed |
Synergistic Effect of Nizoral and Iodide Ions on the Corrosion Inhibition of Mild Steel in Sulphuric Acid Solution |
title_sort |
Synergistic Effect of Nizoral and Iodide Ions on the Corrosion Inhibition of Mild Steel in Sulphuric Acid Solution |
author |
Obot,Ime B. |
author_facet |
Obot,Ime B. |
author_role |
author |
dc.contributor.author.fl_str_mv |
Obot,Ime B. |
dc.subject.por.fl_str_mv |
nizoral mild steel corrosion inhibition adsorption isotherm thermodynamics sulphuric acid |
topic |
nizoral mild steel corrosion inhibition adsorption isotherm thermodynamics sulphuric acid |
description |
The corrosion rates in the presence of nizoral (NZR), an antifungal drug, as mild steel corrosion inhibitor in 0.1 M H2SO4 was measured by the weight loss method in the temperature range from 30 - 50 ºC. Results obtained revealed that NZR acts as an inhibitor for mild steel in sulphuric acid solution. Inhibition efficiency increased with increase in concentration of the inhibitor but decreased with increase in temperature. The addition of KI increased the inhibition of NZR to a considerable extent. The experimental results suggest that the presence of iodide ions in the solution stabilized the adsorption of Nizoral molecules on the mild steel surface thereby improving the inhibition efficiency of Nizoral. The adsorption characteristics of the inhibitor were approximated by Langmuir adsorption isotherm and kinetic/thermodynamic adsorption model of El-Awady et al. Mechanism of physical adsorption is proposed from the activation and thermodynamic parameters calculated. |
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=S0872-19042009000500003 |
url |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000500003 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000500003 |
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.5 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 |
repository.mail.fl_str_mv |
|
_version_ |
1799137290336862208 |