Cimetidine as an Effective Corrosion Inhibitor for Mild Steel in Hydrochloric Acid
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Singh, Ambrish
Gupta, A. C.
Rawat, Anil K.
Ansari, K.r.
Quraishi, M.a.
Ebenso, Eno Effiong
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CITESEERX
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Abstract
The performance of Cimetidine (2-cyano- 1-methyl- 3-(2-[(5-methyl- 1H-imidazol- 4-yl)methylthio]ethyl)guanidine) as corrosion inhibitor for mild steel in 1 M HCl was thoroughly investigated by weight loss and electrochemical methods. The inhibition efficiency of cimetidine obtained by all methods was in good agreement with each other. Polarization studies revealed that the inhibiting action of the cimetidine is under mixed control. The free energy of adsorption and the influence of temperature on the adsorption of inhibitor onto mild steel surface have been reported. The quantum chemical calculations were applied to elucidate adsorption pattern of inhibitor molecules on the steel surface.
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Mild steel, Hydrochloric acid, Effective corrosion inhibitor, Inhibition efficiency, Polarization study, Electrochemical method, Mixed control, Adsorption pattern, Methylthio ethyl, Good agreement, Weight loss, Free energy, Steel surface, Quantum chemical calculation, Inhibitor molecule, Corrosion inhibitor, Mild steel surface
Citation
Singh, A., Gupta, A.C., Rawat, A.K., Ansari, K., Quraishi, M. & Ebenso, E.E. 2014. Cimetidine as an Effective Corrosion Inhibitor for Mild Steel in Hydrochloric Acid. International Journal Of Electrochemical Science, 9:7614-7628. [ http://citeseerx.ist.psu.edu/ ]