Corrosion inhibition of mild steel by P,P′‐Bis (triphenylphosphonio) methyl benzophenone dibromide in HCl solution

Ayssar Nahlé (Department of Chemistry, College of Sciences, University of Sharjah, Sharjah, United Arab Emirates)
Maysoon Al‐Khayat (Department of Chemistry, College of Sciences, University of Sharjah, Sharjah, United Arab Emirates)
Ideisan Abu‐Abdoun (Department of Chemistry, College of Sciences, University of Sharjah, Sharjah, United Arab Emirates)
Ibrahim Abdel‐Rahman (Department of Chemistry, College of Sciences, University of Sharjah, Sharjah, United Arab Emirates)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Publication date: 4 January 2013

Abstract

Purpose

The purpose of this paper is to study electrochemically and by weight loss experiments the effect of P,P′‐Bis (triphenylphosphonio) methyl benzophenone dibromide (TPPMB) on the corrosion inhibition of mild steel in 1.0M HCl solution, which will serve researchers in the field of corrosion.

Design/methodology/approach

Weight loss measurements were carried out on mild steel specimens in 1.0M HCl and in 1.0M HCl containing various concentrations (2×10−8M and 2×10−5M) of the laboratory synthesized TPPMB at temperatures ranging from 303 to 343 K.

Findings

TPPMB was found to be a highly efficient inhibitor for mild steel in 1.0M HCl solution, reaching about 98% at the concentration of 2×10−5M at 303 K, a concentration and temperature considered to be very moderate. The percentage of inhibition in the presence of this inhibitor was decreased with temperature which indicates that physical adsorption was the predominant inhibition mechanism because the quantity of adsorbed inhibitor decreases with increasing temperature.

Practical implications

This inhibitor could have application in industries, where hydrochloric acid solutions at elevated temperatures are used to remove scale and salts from steel surfaces, such as acid cleaning of tankage and pipeline, and may render dismantling unnecessary.

Originality/value

This paper is intended to be added to the family of phosphonium salt corrosion inhibitors which are highly efficient and can be employed in the area of corrosion prevention and control.

Keywords

Citation

Nahlé, A., Al‐Khayat, M., Abu‐Abdoun, I. and Abdel‐Rahman, I. (2013), "Corrosion inhibition of mild steel by P,P′‐Bis (triphenylphosphonio) methyl benzophenone dibromide in HCl solution", Anti-Corrosion Methods and Materials, Vol. 60 No. 1, pp. 20-27. https://doi.org/10.1108/00035591311287410

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Publisher

:

Emerald Group Publishing Limited

Copyright © 2013, Emerald Group Publishing Limited

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