Corrosion Inhibition of Mild Steel in Hydrochloric Acid by 2-Benzoylpyridine and Pyridoxolhydrochloride

A. O. James; N. C. Oforka; O. K. Abiola; B. I. Ita

doi:10.1155/2009/929816

E-Journal of Chemistry (Jan 2009)

Corrosion Inhibition of Mild Steel in Hydrochloric Acid by 2-Benzoylpyridine and Pyridoxolhydrochloride

A. O. James,
N. C. Oforka,
O. K. Abiola,
B. I. Ita

Affiliations

A. O. James: Department of Pure and Industrial Chemistry, University of Port Harcourt, P.M.B. 5323, Port Harcourt, Nigeria
N. C. Oforka: Department of Pure and Industrial Chemistry, University of Port Harcourt, P.M.B. 5323, Port Harcourt, Nigeria
O. K. Abiola: Department of Pure and Industrial Chemistry, University of Port Harcourt, P.M.B. 5323, Port Harcourt, Nigeria
B. I. Ita: Chemistry Department, University of Calabar, Calabar, Nigeria

DOI: https://doi.org/10.1155/2009/929816
Journal volume & issue: Vol. 6, no. 2
pp. 385 – 394

Abstract

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The inhibition of corrosion of mild steel in hydrochloric acid solutions by 2-benzoylpyridine (2BP) and pyridoxolhydrochloride (PXO) at 303K, 313K and 323K has been investigated using weight loss and hydrogen evolution techniques. 2BP exhibited higher maximum inhibition efficiency (78.99%) than PXO (71.93%). Generally inhibition was found to increase with increasing inhibitor concentration and decreasing temperature. A first order type of mechanism has been deduced from the kinetic treatment of the results and the process of inhibition was attributed to physisorption. The difference in the inhibition behaviour of the two compounds has been explained on the basis of structure dependent electron donor properties of the inhibitors

Published in E-Journal of Chemistry

ISSN: 0973-4945 (Print); 2090-9810 (Online)
Publisher: Wiley
Country of publisher: United Kingdom
LCC subjects: Science: Chemistry
Website: https://onlinelibrary.wiley.com/journal/2962

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