1. Corrosion inhibition of carbon steel in hydrochloric acid: Elucidating the performance of an imidazoline-based surfactant
- Author
-
Ehsan A. Ahmad, Michal Walczak, Nicholas M. Harrison, Kiran Kousar, T Ljungdahl, P Restuccia, A Wetzel, Hans Oskarsson, Robert Lindsay, BP International Limited (0946), Engineering & Physical Science Research Council (EPSRC), K.Kousar, M.S.Walczak, T.Ljungdahl, A.Wetzel, H.Oskarsson, P.Restuccia, E.A.Ahmad, N.M.Harrison, and R.Lindsay
- Subjects
Technology ,Materials science ,ADSORPTION ,Acid inhibition (C) ,Carbon steel ,020209 energy ,General Chemical Engineering ,Materials Science ,Hydrochloric acid ,Materials Science, Multidisciplinary ,02 engineering and technology ,engineering.material ,Electrochemistry ,0905 Civil Engineering ,Corrosion ,Corrosion inhibitor ,chemistry.chemical_compound ,Adsorption ,Carbon steel (A) ,Polarization ,0202 electrical engineering, electronic engineering, information engineering ,XPS ,SPECTRA ,General Materials Science ,Polarization (electrochemistry) ,0912 Materials Engineering ,X-RAY PHOTOEMISSION ,MILD-STEEL ,Science & Technology ,Energy ,DERIVATIVES ,IRON ,Polarization (B) ,General Chemistry ,021001 nanoscience & nanotechnology ,chemistry ,Chemical engineering ,Critical micelle concentration ,engineering ,Acid inhibition ,Metallurgy & Metallurgical Engineering ,XPS (B) ,0210 nano-technology ,0913 Mechanical Engineering - Abstract
A combination of electrochemical measurement and interface analysis have been applied to characterise the interaction of OMID, an exemplar imidazoline-based corrosion inhibitor, with carbon steel in 1 M hydrochloric acid. Corrosion inhibition efficiency data indicate that excellent performance is achieved well below the critical micelle concentration. High resolution X-ray photoelectron spectra demonstrate that, as the corrosion rate decreases, the interface evolves towards one comprising OMID bound to film-free carbon steel. This latter result provides key input for those researchers attempting to predict corrosion inhibitor functionality through atomic scale interfacial modelling, and so identify next generation chemistries.
- Published
- 2020