Four novel imidazolium-derived ionic liquids: Synthesis and anti-corrosion characteristics
By Deyab, M. A.; Nessim, M. I.; Haikal, Abdelfattah; Mohsen, Q.; Khalil, N. A.
Published in Journal of Molecular Liquids
2022
Abstract
This paper describes the corrosion inhibiting action of four new imidazolium-derived ionic liquids (ILs). Elements analysis, Infrared, TGA, 1H–13C NMR, XRD and HSQC-NMR were used to confirm the molecular formula of ILs. The corrosion suppressive effectiveness was calculated using loss of mass and electrochemical experiments and ranged from 53 to 96%. Their adsorption on a steel substrate was precisely characterized using the Langmuir isotherm. Gibbs free energies vary from − 35.24 kJ mol−1 to − 41.82 kJ mol−1, indicating that ILs are adsorbing via physi-chemisorption scenario. SEM/EDX and FTIR were used to validate the process of adsorption of ionic liquids.