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Vol. 25 No. 2 (2013): Vol 25 Issue 2

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Ethylbenzotriazolium Bromide Ionic Liquid: A New Water Soluble Inhibitor for Corrosion of Mild Steel in Acid Media

https://doi.org/10.14233/ajchem.2013.13232
Hongmei Wang
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan Province, P.R. China ; Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410004, Hunan Province, P.R. China
Suqin Liu
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan Province, P.R. China
Kelong Huang
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan Province, P.R. China
Younian Liu
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan Province, P.R. China
Zhaonan Li
Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410004, Hunan Province, P.R. China

Corresponding Author(s) : Suqin Liu

sqliu2003@126.com

Asian Journal of Chemistry, Vol. 25 No. 2 (2013): Vol 25 Issue 2

Abstract

The inhibiting effect of 1-ethyl-3-ethylbenzotriazolium bromide ionic liquid, [C2Et]Br, on the corrosion behaviour of mild steel in 5 wt. % HCl was investigated by using various techniques such as weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy. All studies showed that the increase in inhibition efficiency and decrease in the corrosion rate by increasing the inhibitor concentration. Polarization measurements indicated that the [C2Et]Br acted essentially as a mixed-type inhibitor. The electrochemical impedance study showed that corrosion inhibition took place by adsorption.

Keywords

Benzotriazolium ionic liquid Corrosion Steel Polarization EIS Acid solution
Wang, H., Liu, S., Huang, K., Liu, Y., & Li, Z. (2012). Ethylbenzotriazolium Bromide Ionic Liquid: A New Water Soluble Inhibitor for Corrosion of Mild Steel in Acid Media. Asian Journal of Chemistry, 25(2), 954–956. https://doi.org/10.14233/ajchem.2013.13232
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