Corrosion inhibition effect of 5-(4-methylpiperazine)-methylquinoline-8-ol on carbon steel in molar acid medium
| Autor: | Fouad Benhiba, Rachid Touir, Abdellah Guenbour, H. Oudda, T. Laabaissi, M. El Faydy, M. Bouassiria, Abdelkader Zarrouk, H. Fakhry, Brahim Lakhrissi, Ismail Warad, M. Assouag |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Carbon steel 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Corrosion Inorganic Chemistry Metal symbols.namesake Corrosion inhibitor chemistry.chemical_compound Adsorption Materials Chemistry Molecule Physical and Theoretical Chemistry Langmuir adsorption model 021001 nanoscience & nanotechnology 0104 chemical sciences Dielectric spectroscopy chemistry visual_art engineering symbols visual_art.visual_art_medium 0210 nano-technology Nuclear chemistry |
| Zdroj: | Inorganic Chemistry Communications. 123:108366 |
| ISSN: | 1387-7003 |
| DOI: | 10.1016/j.inoche.2020.108366 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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