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

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

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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Main Authors: Ejikeme,P.M., Umana,S.G., Onukwuli,O.D.
Format: Digital revista
Language:English
Published: Sociedade Portuguesa de Electroquímica 2012
Online Access:http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042012000500002
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spelling oai:scielo:S0872-190420120005000022013-04-19Corrosion Inhibition of Aluminium by Treculia Africana Leaves Extract in Acid MediumEjikeme,P.M.Umana,S.G.Onukwuli,O.D. weight loss aluminium heat of adsorption activation energy adsorption isotherm 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.info:eu-repo/semantics/openAccessSociedade Portuguesa de ElectroquímicaPortugaliae Electrochimica Acta v.30 n.5 20122012-09-01info:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042012000500002en10.4152/pea.201205317
institution SCIELO
collection OJS
country Portugal
countrycode PT
component Revista
access En linea
databasecode rev-scielo-pt
tag revista
region Europa del Sur
libraryname SciELO
language English
format Digital
author Ejikeme,P.M.
Umana,S.G.
Onukwuli,O.D.
spellingShingle Ejikeme,P.M.
Umana,S.G.
Onukwuli,O.D.
Corrosion Inhibition of Aluminium by Treculia Africana Leaves Extract in Acid Medium
author_facet Ejikeme,P.M.
Umana,S.G.
Onukwuli,O.D.
author_sort Ejikeme,P.M.
title Corrosion Inhibition of Aluminium by Treculia Africana Leaves Extract in Acid Medium
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
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.
publisher Sociedade Portuguesa de Electroquímica
publishDate 2012
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042012000500002
work_keys_str_mv AT ejikemepm corrosioninhibitionofaluminiumbytreculiaafricanaleavesextractinacidmedium
AT umanasg corrosioninhibitionofaluminiumbytreculiaafricanaleavesextractinacidmedium
AT onukwuliod corrosioninhibitionofaluminiumbytreculiaafricanaleavesextractinacidmedium
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