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DOI Prefix 10.20431 |
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International Journal of Clinical Chemistry and Laboratory Medicine
Volume-1 Issue-1, 2015, Page No:9-18
Evaluation of Cefuroxime Axetil Drug as Acid Corrosion Inhibitor for Zinc using Polarization and Weight Loss Technique
Umar M. Sani, Paul Ocheje Ameh
Department of Chemistry, Nigeria Police Academy, Wudil, Kano, Nigeria
Citation : Umar M. Sani, Paul Ocheje Ameh, Evaluation of Cefuroxime Axetil Drug as Acid Corrosion Inhibitor for Zinc using Polarization and Weight Loss Technique International Journal of Clinical Chemistry and Laboratory Medicine. 2015;1(1):9-18.
Abstract
The corrosion inhibition of zinc in 1.0 M H2SO4 solution by Cefuroxime axetil has been studied in relation to the concentration of the additive using weight loss measurement, Linear polarization resistant (LPR) and potentiodynamic polarization (PDP).The results indicate that Cefuroxime axetil inhibited corrosion reaction in the acid medium and inhibition efficiency increased with inhibitor concentration. The inhibitor was found to be adsorption inhibitor that best fitted the Langmuir adsorption model. From calculated values of activation energy, free energy of adsorption and the variation of inhibition efficiency with temperature, it was deduced that the adsorption of the inhibitor favours the mechanism of physical adsorption. The polarization data indicate that the inhibitor was of mixed type. The results obtained from LPR, PDP and weight loss measurements were in good agreement.
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