Title of article :
Evaluation of Corrosion Inhibition and Adsorption Behavior of 7-Isopropyl-4- methyl-4,5,6,7-tetrahydrobenzoisoxazole against Carbon Steel Corrosion in 1 M HCl. Experimental and Computational Investigations
Author/Authors :
Ansari, Abdeslam Moulay Ismail University of Meknes - Laboratory of chemistry Physics of Materials - Faculty of Sciences and Techniques - P.B 509, 52000, Errachidia, Morocco , Lakbaibi, Zouhair Moulay Ismail University of Meknes - Laboratory of Natural Substances & Synthesis and Molecular Dynamics - Faculty of Sciences and Techniques - P.B 509, 52000, Errachidia, Morocco , Znini, Mohamed Moulay Ismail University of Meknes - Laboratory of Natural Substances & Synthesis and Molecular Dynamics - Faculty of Sciences and Techniques - P.B 509, 52000, Errachidia, Morocco , Manssouri, Mounir Moulay Ismail University of Meknes - Laboratory of Natural Substances & Synthesis and Molecular Dynamics - Faculty of Sciences and Techniques - P.B 509, 52000, Errachidia, Morocco , Laghchimi, Amal Moulay Ismail University of Meknes - Laboratory of Natural Substances & Synthesis and Molecular Dynamics - Faculty of Sciences and Techniques - P.B 509, 52000, Errachidia, Morocco
Abstract :
The corrosion inhibition capabilities of menthone, discovered in 2014 by our team, encouraged us to prepare again a new derivative of
menthone called 7-isopropyl-4-methyl-4,5,6,7-tetrahydrobenzoisoxazole (MD). This compound was characterized by FT-IR, 1H NMR and
13C NMR techniques. Then, the evaluation of corrosion inhibition and adsorption behavior of MD onto carbon steel was carried out in 1 M
HCl using the weight loss analysis and electrochemical methods such as potentiodynamic polarization (PDP), and electrochemical
impedance spectroscopy. The inhibition efficiency was increased by the increase of both the dose of MD (0.72 to 5.65 mM) and the
temperature of the medium (298 to 323 K). The thermodynamic kinetic parameters showed that the adsorption of MD on the carbon steel
surface follows the Langmuir adsorption isotherm. Furthermore, PDP measurements exhibited that the studied MD inhibitor performs as a
mixed-type inhibitor. Finally, the density functional theory, molecular electrostatic potential and Monte Carlo studies were performed to
gain an insight about adsorption mechanism, indicating that the MD inhibitor can effectively limit corrosion onto the carbon steel surface.
Based on the results, we have concluded that the synthesized MD can be used as an efficient inhibitor to stop carbon steel surface
corrosion.
Keywords :
Menthone derivative , Corrosion inhibitor , Density functional theory , Monte Carlo Simulation
Journal title :
Analytical and Bioanalytical Chemistry Research
