Adsorption and corrosion inhibition performance studies of 2-phenylpyrimido [1,2-a] benzimidazol-4(1H)-one, on carbon steel corrosion in acidic solution

Authors

  • M. Belkhaouda Ecole Nationale des Sciences Appliquées d'Agadir. Equipe Génie de l'Environnement et de Biotechnologie.
  • A. batah M. Belkhaouda1,2, A. Batah1, O.1, L. 1, S. 3, 1,
  • L. Bammou
  • O. Id El Mouden
  • S. El Issami
  • B. El Makrini

DOI:

https://doi.org/10.48422/IMIST.PRSM/ajees-v6i1.19939

Keywords:

Corrosion inhibition, Adsorption, Carbon-Steel, 2-Phenylpyrimido[1, 2-a]benzimidazol-4(1H)-one, Acid medium.

Abstract

The corrosion performance of carbon steel in acidic medium with different concentration of synthesized organic compounds namely: 2-Phenylpyrimido[1,2-a] benzimidazol-4(1H)-one (PPBI), was investigated by Potentiodynamic Polarization Curves (PPC) and Electrochemical Impedance Spectroscopy (EIS)  measurements. The obtained results reveal that (PPBI) performs excellently as good corrosion inhibitor for carbon steel in 1.0 M HCl. Polarization curves studies indicated that (PPBI) behaves as mixed-type inhibitor. The calculated inhibition efficiencies from two experiments measurements show the same evolution. Also,  the  inhibition  efficiency  was  found  to increase  with increase of the inhibitor concentrations to reach 86 % at 10-3 M of (PPBI) due to the adsorption of the inhibitor molecule on  the  electrode  surface. Impedance measurements spectra exhibit one capacitive and valid the inhibitive ability confirming that this inhibitor inhibits the corrosion in 1 M HCl through adsorption process following Langmuir adsorption isotherm.  

Author Biography

M. Belkhaouda, Ecole Nationale des Sciences Appliquées d'Agadir. Equipe Génie de l'Environnement et de Biotechnologie.

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Published

01-04-2020

Issue

Vol. 6 No. 1 (2020)

Section

Articles