Inhibition Mechanism of Some Vinylalkylimidazolium-Based Polymeric Ionic Liquids against Acid Corrosion of API 5L X60 Steel: Electrochemical and Surface Studies
Giselle Gómez-Sánchez, Octavio Olivares‐Xometl, Natalya V. Likhanova, Paulina Arellanes-Lozada, Irina V. Lijanova, Víctor Díaz-Jiménez, Diego Guzmán‐Lucero, Janette Arriola-Morales
Abstract
was proposed from the evaluation of three vinylalkylimidazolium poly(ionic liquids) (PILs), employing electrochemical and surface analysis techniques. The synthesized PILs were classified as mixed-type inhibitors whose surface adsorption was promoted mainly by bromide and imidazolate ions, which along with vinylimidazolium cations exerted a resistive effect driven by a charge transfer process by means of a protective PIL film with maximal efficiency of 85% at 175 ppm; the steel surface displayed less surface damage due to the formation of metal-PIL complex compounds.