The inhibition of carbon steel corrosion in hydrochloric acid media using 2-[(5-methyl-isoxazol-3-yl)-methyl]-benzimidazole

Carbon steel corrosion inhibition in a hydrochloric acid solution by 2-[(5-methyl-isoxazol-3-yl)-methyl]-benzimidazole (MMB) has been studied by electrochemical techniques (PDP and EIS). Results showed that the inhibition efficiency increases with higher MMB concentration, and the maximum value of 86.6% was obtained at 10-3 M concentration. The prepared benzimidazole inhibitor showed higher inhibition efficiency upon raising the solution temperature from 303 to 333 K. Corrosion current density decreased from 660.9 µA cm-2 (blank) to 97.8 µA cm-2 (MMB) and charge transfer resistance increased from 20.2 Ω cm2 (blank) to 150.8 Ω cm2 (MMB). PDP studies showed that MMB is a mixed type inhibitor. The adsorption of this compound onto the carbon steel surface in a 1 M HCl solution followed the Langmuir adsorption isotherm, and the value of the standard free energy of adsorption ( ΔG° ads ) is associated to. © 2021, Sociedade Portuguesa de Electroquimica. All rights reserved.

Authors
Sebhaoui J.1 , El Aoufir Y. , El Bakri Y. , Bourazmi H.4 , Ben Ali A. , Guenbour A.4 , Oudda H.3 , Zarrouk A.1, 4 , Essassi E.M.1
Journal
Portugaliae Electrochimica Acta
Publisher
Sociedade Portuguesa de Electroquimica
Number of issue
3
Language
English
Pages
213-224
Status
Published
Link
External link
DOI
10.4152/pea.2021390305
Volume
39
Year
2021
Organizations
  • 1 Laboratory of Heterocyclic Organic Chemestry, URAC 21, Pole of Competence, Pharmacochemics, Faculty of Sciences, University Mohammed V, Av IbnBattouta, P.O. 1014, Rabat, Morocco
  • 2 Department of Chemistry, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya st., Moscow, 117198, Russian Federation
  • 3 Laboratory of Separation Processes, University Ibn Tofail, Faculty of Sciences, Kenitra, Morocco
  • 4 Laboratory of Materials, Nanotechnology and Environment, Mohammed V University, Faculty of Sciences, Av. ibn Battuta. B.P 1014, Rabat, Morocco
  • 5 Laboratory of Applied Chemestry of Materials, Centres for Sciences of Materials, Faculty of Sciences, Mohammed V University in Rabat, Avenue Ibn Battouta, P.O. 1014, Rabat, Morocco
Keywords
Benzimidazole; Carbon steel; Corrosion inhibition; Electrochemical techniques
Date of creation
16.12.2021
Date of change
16.12.2021
Short link
https://repository.rudn.ru/en/records/article/record/76721/
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