https://doi.org/10.1007/s40090-019-0181-8

Synthesis and investigations of heterocyclic compounds as corrosion inhibitors for mild steel in hydrochloric acid

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  • Salima K. Ahmed1,
  • Wassan B. Ali1,
  • Anees A. Khadom*2,
  1. Department of Chemistry, College of Science, University of Diyala, Baquba City, 32001, Diyala Governorate, Iraq
  2. Department of Chemical Engineering, College of Engineering, University of Diyala, Baquba City, 32001, Diyala Governorate, Iraq

Published in Issue 2023-11-17

How to Cite

Ahmed, S. K., B. Ali, W., & A. Khadom, A. (2023). Synthesis and investigations of heterocyclic compounds as corrosion inhibitors for mild steel in hydrochloric acid. International Journal of Industrial Chemistry, 10(2). https://doi.org/https://doi.org/10.1007/s40090-019-0181-8
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Abstract

The corrosion inhibition of mild steel in 0.5 M hydrochloric acid by six synthesized heterocyclic compounds was studied using weight loss measurements. The inhibition efficiency exceeded 95%. The excellent inhibitor performance was attributed to the formation of protection adsorption films on the steel surface. The structures of compounds were confirmed by Fourier transform infrared and nuclear magnetic resonance analysis. The adsorption of inhibitor on steel surface followed the Langmuir adsorption isotherm. Quantum chemical calculations were also adopted to clarify the inhibition mechanism.

Keywords

  • Corrosion,
  • FT,
  • Inhibition,
  • IR,
  • Steel,
  • Synthesis,
  • Weight loss
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