Статья

The New Organic Molecule-Based Epoxy Resin as an Effective Corrosion Inhibitor for Mild Steel in Sulfuric Acid Medium

A. BenabidaLaboratory of materials, electrochemistry and environment, Faculty of Science, Ibn Tofail University, PB 133-14050, Kénitra, MoroccoN. EL- AouniLaboratory of Polymers, Radiation and Environment- Team of Macromolecular and Organic Chemistry, Faculty of Science, University Ibn Tofail, BP 133, 14000, Kénitra, MoroccoM. GalaiLaboratory of materials, electrochemistry and environment, Faculty of Science, Ibn Tofail University, PB 133-14050, Kénitra, MoroccoA. El AssyryLaboratory of Polymer Physics and Critical Phenomena, Department of Physics, Faculty of Sciences Ben M’Sik, Hassan II University, Casablanca, MoroccoOmar DagdagLaboratory of Polymers, Radiation and Environment- Team of Macromolecular and Organic Chemistry, Faculty of Science, University Ibn Tofail, BP 133, 14000, Kénitra, MoroccoMohammed CherkaouiLaboratory of materials, electrochemistry and environment, Faculty of Science, Ibn Tofail University, PB 133-14050, Kénitra, MoroccoAhmed El HarfiLaboratory of Polymers, Radiation and Environment- Team of Macromolecular and Organic Chemistry, Faculty of Science, University Ibn Tofail, BP 133, 14000, Kénitra, MoroccoA. ZarroukLaboratory of Materials, Nanotechnology and Environment, Faculty of Sciences, Mohammed V University, P.O. Box. 1014, Rabat, Morocco

2021en

ABI

Аннотация

The influence of organic molecule based from Epoxy Resin Octa-functional (REO) on the corrosion inhibition of mild steel in the presence of 0.5 M H2SO4 at different temperatures have been studied using polarization, EIS and computational methods. Polarization curves indicate that REO is a mixed inhibitor. EIS measurements show an increase of the transfer resistance with increasing inhibitor concentration. The inhibition efficiency of REO reaching 98% was observed at 10–3 M concentration. The inhibitor adsorption is chemical adsorption compound using the Langmuir adsorption isotherm. The free adsorption energy and the influence of temperature on the inhibitor adsorption onto mild steel surface have been reported. Calculated $$\Delta G_{{{\text{ads}}}}^{^\circ }$$ values confirm that the adsorption mechanism of this inhibitor on mild steel in 0.5 M H2SO4 solution is a chemical adsorption. The quantum chemical calculations were applied to elucidate adsorption pattern of inhibitor molecules on the steel surface.

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Идентификаторы

DOI: 10.1134/s2070205120060052

Цитирования и источники

Цитирований: 4Использованных источников: 0

Показатели — AkademScholar