Journal of Molecular Liquids p. 341 - 359 (2019)
Update date:2022-08-16
Topics:
El Faydy
Lakhrissi
Guenbour
Kaya
Bentiss
Warad
Zarrouk
Two new organic compounds based on 8-hydroxyquinoline have been successfully synthesized, and characterized by FT-IR, 1H, 13C NMR and Elemental analysis. The synthesized compounds namely tert-butyl((8-hydroxyquinolin-5-yl)-methyl)-carbamate (BHQC) and Ethyl 3-(((8-hydroxyquinolin-5-yl)-methyl)-amino)-3-oxopropanoate (EHQP) are evaluated as corrosion inhibitors for carbon steel (CS) in 1 M HCl solution using electrochemical techniques, UV ? visible and SEM at 298 K. Electrochemical measurements showed that these organic compounds are mixed type inhibitors. The adsorption of both inhibitors on the carbon steel surface followed Langmuir adsorption isotherm. Furthermore, DFT calculations and Monte Carlo simulation were performed to theoretically establish the relationship between molecular structure and inhibition efficiency.
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