Experimental and Theoretical Studies of One Dihydropyridine Derivative as Corrosion Inhibitor in Acidic Media

Shafieekhani, Homa; Karimi, Somayeh; Torkashvand, Mohammad

doi:10.30473/ijac.2021.57472.1179

Document Type : Full research article

Authors

¹ Department of Chemistry, Payam Noor University, P.O. Box 19395-4697, Tehran, Iran

² Islamic Azad University, Lamerd Branch, P.O. Box 74341-553881, Lamerd, Iran

³ College of Engineering, University of Tehran, P.O. Box. 14395-515, Tehran, Iran

https://doi.org/10.30473/ijac.2021.57472.1179

Abstract

A new organic compound, namely dihydropyrimido [4,5-b][1,6] naphthyridine-2,4, 6, 8(1H,3H,7H,9H)-tetraones with amino acid moiety (DHPN) was synthesized and characterized by ¹H, ¹³C Nuclear magnetic resonance (NMR) and Fourier transform infrared (FTIR) spectroscopy experiments. DHPN was investigated for the first time as a green inhibitor of mild steel (A105) corrosion in acidic (0.1, 0.5 mol L^-1 H₂SO₄ and HCl) solutions using potentiodynamic polarization technique. The results showed that, inhibition efficiency increased with the inhibitor concentration within the range of 0.95-19 mg L^-1. The polarization curves demonstrated that, this compound act as a mixed type inhibitor. The adsorption of the DHPN molecule on the surface of mild steel was found to obey the Langmuir adsorption isotherm. Besides, data processing methods like support vector machine modelling was performed to prove the relationship between inhibitory effect and molecular structure.

Keywords

References

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Iranian Journal of Analytical Chemistry

Experimental and Theoretical Studies of One Dihydropyridine Derivative as Corrosion Inhibitor in Acidic Media

References

References

Volume 8, Issue 1 - Serial Number 15
March 2021
Pages 10-16

Experimental and Theoretical Studies of One Dihydropyridine Derivative as Corrosion Inhibitor in Acidic Media

References

References

Volume 8, Issue 1 - Serial Number 15March 2021Pages 10-16

Volume 8, Issue 1 - Serial Number 15
March 2021
Pages 10-16