Inhibition of the Corrosion of Zinc in 0.01 - 0.04 M H2SO4 by Erythromycin
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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Sociedade Portuguesa de Electroquímica
2010
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oai:scielo:S0872-190420100001000022010-08-18Inhibition of the Corrosion of Zinc in 0.01 - 0.04 M H2SO4 by ErythromycinEddy,N.O.Odoemelam,S.A.Ogoko,E.C.Ita,B.I. corrosion inhibition Zn, H2SO4 erythromycin 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.info:eu-repo/semantics/openAccessSociedade Portuguesa de ElectroquímicaPortugaliae Electrochimica Acta v.28 n.1 20102010-01-01info:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042010000100002en |
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Eddy,N.O. Odoemelam,S.A. Ogoko,E.C. Ita,B.I. |
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Eddy,N.O. Odoemelam,S.A. Ogoko,E.C. Ita,B.I. Inhibition of the Corrosion of Zinc in 0.01 - 0.04 M H2SO4 by Erythromycin |
| author_facet |
Eddy,N.O. Odoemelam,S.A. Ogoko,E.C. Ita,B.I. |
| author_sort |
Eddy,N.O. |
| title |
Inhibition of the Corrosion of Zinc in 0.01 - 0.04 M H2SO4 by 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 |
| 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. |
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Sociedade Portuguesa de Electroquímica |
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2010 |
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http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042010000100002 |
| work_keys_str_mv |
AT eddyno inhibitionofthecorrosionofzincin001004mh2so4byerythromycin AT odoemelamsa inhibitionofthecorrosionofzincin001004mh2so4byerythromycin AT ogokoec inhibitionofthecorrosionofzincin001004mh2so4byerythromycin AT itabi inhibitionofthecorrosionofzincin001004mh2so4byerythromycin |
| _version_ |
1756001875688161280 |