Abstract

The present study provides a new application of the 5-(4-methylpiperazinyl)-methylquinolin-8-ol (MPMQ) as an inhibitor for corrosion of carbon steel (CS) in acidic media (1 M HCl). The inhibition performance of MPMQ was evaluated using various methods including electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), surface morphology analysis (SEM), quantum chemical computations (DFT), and Monte Carlo simulations (MC). The obtained results, indicating that the compound as a mixed-type inhibitor significantly reduced the corrosion rate of CS due to the formation of a stable protective film on the metal surface. As confirmed by EIS, SEM and theoretical studies, chemically adsorbed MPMQ molecule is a better corrosion inhibitor with higher corrosion performance of about 95% at room temperature. Langmuir isotherm model is the most acceptable one to describe the MPMQ molecules adsorption on the CS-surface. Finally, the experimental data correlated well with the theoretical study.

Title

Ismail

Publisher

warad

Publisher Country

Palestine

Publication Type

Prtinted only

Volume

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Year

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Pages

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