Theoretical and Experimental Study of a New Imidazo (1,2-a) Pyridine Derivative as a Corrosion Inhibitor for the Carbon Steel Surface in the Saline Media

Authors

  • Rehab Majed Kubba Department of Chemistry, College of Science, University of Baghdad, Baghdad, Iraq
  • Nada Mohammed Al-Joborry Department of Chemistry, College of Science, University of Baghdad, Baghdad, Iraq

Keywords:

Imidazo[1,2-a]pyridine, Corrosion inhibitors, Quantum chemical calculations, Thermodynamic parameters

Abstract

Newly synthesis derivative of imidazo (1,2-a) pyridine namely, 2-(4-Bromo-phenyl)-2,3-dihydro-imidazo[1,2-a] pyridine-3-yl methylene]- phenyl-amine (BDIPMA) was investigated as corrosion inhibitor for carbon steel in saline solution (3.5% NaCl) using potentiometric polarization measurements. Experimentally, the thermodynamic parameters obtained have supported a physical adsorption mechanism and the adsorption followed the Langmuir adsorption isotherm. Quantum mechanical method of the Density Functional Theory (DFT) of B3LYP with [6-311++G (2d, 2p)] level were used to calculate the optimized structure, chemical inhibition efficiency parameter (%IE) and physical properties in vacuum and two solvents (DMSO and H2O), all at the equilibrium geometry. The surface changes of the carbon steel were studied using SEM and AFM techniques.

References

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Published

2020-03-04

Issue

Section

Articles

How to Cite

[1]
“Theoretical and Experimental Study of a New Imidazo (1,2-a) Pyridine Derivative as a Corrosion Inhibitor for the Carbon Steel Surface in the Saline Media”, ANJS, vol. 23, no. 1, pp. 13–26, Mar. 2020, Accessed: Apr. 25, 2024. [Online]. Available: https://anjs.edu.iq/index.php/anjs/article/view/2236