Studies on the inhibitive effect of (Z)-4-chloro-N-((2-chloroquinolin-3-yl)methylene)aniline Schiff base on the corrosion of mild steel in 1N HCl solution

Studies on the inhibitive effect of (Z)-4-chloro-N-((2-chloroquinolin-3-yl)methylene)aniline... The effect of novel synthesized Schiff base, namely (Z)-4-chloro-N-((2-chloroquinolin-3-yl)methylene)aniline (4-CCMA) on the corrosion of mild steel in 1 N HCl was investigated using weight loss, potentiodynamic polarization, linear polarization, electrochemical impedance spectroscopy, and scanning electron microscopy. The experimental results showed that 4-CCMA revealed good corrosion inhibition and that the inhibition efficiency increases with the increase of concentration of inhibitor to attain 99.04 % for 4-CCMA at 25 ppm. Polarization measurements suggest that 4-CCMA acts as a mixed-type inhibitor. Electrochemical impedance spectroscopy measurements show an increase of the transfer resistance with the inhibitor concentration. The temperature effect on the corrosion behavior of mild steel in 1 N HCl without and with the inhibitor at 5–25 ppm were studied in the temperature range from 298 to 318 K, and the associated activation energy has been determined. Adsorption of 4-CCMA on the mild steel surfaces in 1 N HCl follows the Langmuir adsorption isotherm model. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Studies on the inhibitive effect of (Z)-4-chloro-N-((2-chloroquinolin-3-yl)methylene)aniline Schiff base on the corrosion of mild steel in 1N HCl solution

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Publisher
Springer Netherlands
Copyright
Copyright © 2014 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-014-1740-4
Publisher site
See Article on Publisher Site

Abstract

The effect of novel synthesized Schiff base, namely (Z)-4-chloro-N-((2-chloroquinolin-3-yl)methylene)aniline (4-CCMA) on the corrosion of mild steel in 1 N HCl was investigated using weight loss, potentiodynamic polarization, linear polarization, electrochemical impedance spectroscopy, and scanning electron microscopy. The experimental results showed that 4-CCMA revealed good corrosion inhibition and that the inhibition efficiency increases with the increase of concentration of inhibitor to attain 99.04 % for 4-CCMA at 25 ppm. Polarization measurements suggest that 4-CCMA acts as a mixed-type inhibitor. Electrochemical impedance spectroscopy measurements show an increase of the transfer resistance with the inhibitor concentration. The temperature effect on the corrosion behavior of mild steel in 1 N HCl without and with the inhibitor at 5–25 ppm were studied in the temperature range from 298 to 318 K, and the associated activation energy has been determined. Adsorption of 4-CCMA on the mild steel surfaces in 1 N HCl follows the Langmuir adsorption isotherm model.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Jul 18, 2014

References

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