Experimental and theoretical study of 1-(2-ethylamino)-2-methylimidazoline as an inhibitor of carbon steel corrosion in acid media

Corrosion inhibitors for steel reinforcement in concrete: A review

“…A variety of organic compounds have been reported to be effective as corrosion inhibitors during acidization in industrial cleaning processes (Ali et al, 2008). The development of corrosion inhibitors is based on organic compounds containing nitrogen, oxygen, sulfur atoms and multiple bonds in the molecules that facilitate adsorption on the metal surface (Cruz et al, 2004). The corrosion inhibition efficiency of organic compounds is related to their adsorption properties.…”

“…Adsorption depends on the nature and the state of the metal surface on the type of corrosive medium and on the chemical structure of the inhibitor. Studies report that the adsorption of the organic inhibitors mainly depends on some physicochemical properties of the molecule related to its functional groups, to the possible steric effects and electronic density of donor atoms; adsorption is suppose also to depend on the possible interaction of p-orbitals of the inhibitor with dorbitals of the surface atoms, which induce greater adsorption of the inhibitor molecules onto the surface of carbon steel, leading to the formation of a corrosion protecting film (Cruz et al, 2004). Ormellese et al (2009) researched about 80 organic substances as: primary and tertiary amines and alkanolamines, aminoacids, monoand poly-carboxylates.…”

Environmentally Friendly Corrosion Inhibitors

“…At present there are a number of organic inhibitors belonging to different chemical families i.e. fatty amides [4,5], pyridines [6][7][8], imidazolines [9][10][11][12] and other 1,3-azoles [13][14][15] and polymers [16] have showed excellent performance as CIs (Table 1) [17]. The aim of adding inhibitors in low concentrations to corrosive media is to delay the reaction between the metal and the corrosive species in the medium.…”

Efecto de la imidazolina [IM-NH17] en el proceso de corrosión del acero api5l-x52 en salmueras acidificadas

“…Así, a fin de tener un mejor entendimiento de las características de baja toxicidad y comportamiento de inhibidores a un costo aceptable, se requiere una mejor comprensión del mecanismo de inhibición. Es generalmente aceptado que la inhibición de compuestos tales como imodazolinas resulta de la adsorción de películas del inhibidor sobre la superficie metálica (Cruz et al, 2004). La adsorción de esas moléculas sobre la superficie del acero al carbono ocurre por transferencia de carga parcial entre la molécula y el metal, formando un enlace covalente.…”