MYRICETIN AS CORROSION INHIBITOR FOR METALS IN ALCOHOLIC SOLUTIONS

Authors

  • Cristian George VASZILCSIN National Institute of Research and Development in Electrochemistry and Condensed Matter, Timişoara, Romania. Email: cristi_vasz@yahoo.com.
  • Mihai Viorel PUTZ National Institute of Research and Development in Electrochemistry and Condensed Matter; Faculty of Chemistry, Biology, Geography, West University of Timişoara, Romania. Email: mihai.putz@e-uvt.ro. https://orcid.org/0000-0002-9781-1541
  • Mircea L. DAN Faculty of Industrial Chemistry and Environmental Engineering, University Politehnica Timişoara, Romania. Email: mircea.dan@upt.ro. https://orcid.org/0000-0002-7798-5974
  • Mihai Aurel MEDELEANU Faculty of Industrial Chemistry and Environmental Engineering, University Politehnica Timişoara, Romania. Email: mihai.medeleanu@upt.ro. https://orcid.org/0000-0002-6944-0421

DOI:

https://doi.org/10.24193/subbchem.2023.2.02

Keywords:

myricetin, corrosion inhibitor, potentiodynamic polarization, adsorption isotherm, food industry

Abstract

Corrosion inhibitory effect of myricetin in alcoholic solutions has been studied by potentiodynamic polarization. Inhibitory efficiencies of 70%, 61%, 69% and 79% have been obtained for stainless steel, carbon steel, aluminum alloy, and aluminum, respectively. Adsorption Gibbs free energy, determined using Langmuir adsorption isotherms, has revealed that interactions between metal atoms and myricetin adsorbed molecules have chemical character. Moreover, quantum chemistry calculations have shown that myricetin, due to its molecular structure (O heteroatoms with lone pair electrons and p electrons from aromatic rings) has the ability to form an adsorption layer on the metal surface that inhibits the diffusion of molecules and ions participating in the global corrosion process.

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Published

2023-06-30

How to Cite

VASZILCSIN, C. G. ., PUTZ, M. V. ., DAN, M. L. ., & MEDELEANU, M. A. . (2023). MYRICETIN AS CORROSION INHIBITOR FOR METALS IN ALCOHOLIC SOLUTIONS. Studia Universitatis Babeș-Bolyai Chemia, 68(2), 23–36. https://doi.org/10.24193/subbchem.2023.2.02

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