Synthesis of Thiophene Derivative and its Use as Zinc Metal Corrosion Inhibitor in Hydrochloric Acid Solution

  • Noora Assad Department of Chemistry, College of Science, Al-Nahrain University, Baghdad-Iraq.
  • Fatma Abdul-Hameed Department of Chemistry, College of Science, Al-Nahrain University, Baghdad-Iraq.
  • Emad Yousif Department of Chemistry, College of Science, Al-Nahrain University, Baghdad-Iraq.
  • Asim Balakit College of Pharmacy, University of Babylon, Babylon-Iraq.
Keywords: Quinazolin, Imine, Inhibition efficiency, Zinc metal

Abstract

N-[(3-Bromo-2-methylthiophen-5-yl)methylene]-4-methoxyaniline) (5) has been synthesized and used as corrosion inhibitor for zinc metal in 2 M HCl at room temperature by using weight loss measurements. The obtained results showed that (5) is a good inhibitor and its inhibition efficiency (IE %) increased with the increase of inhibitor concentration. The surface coverage was 1.55 at 500 ppm inhibitor concentration; hence the optimum concentration was 500 ppm. Theoretical calculations investigate by studying the relationship between molecular structure and inhibition efficiency using semi-empirical molecular quantum calculations within the PM3 method as implemented in HyperChem package.

Author Biography

Fatma Abdul-Hameed, Department of Chemistry, College of Science, Al-Nahrain University, Baghdad-Iraq.



Published
2018-06-11
How to Cite
Assad, N., Abdul-Hameed, F., Yousif, E., & Balakit, A. (2018). Synthesis of Thiophene Derivative and its Use as Zinc Metal Corrosion Inhibitor in Hydrochloric Acid Solution. Al-Nahrain Journal of Science, 18(2), 69 - 78. Retrieved from https://anjs.edu.iq/index.php/anjs/article/view/331
Section
Articles

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