title: A New Green Ionic Liquid-Based Corrosion Inhibitor for Steel in Acidic Environments.
abstract: This work examines the use of new hydrophobic ionic liquid derivatives, namely octadecylammonium tosylate (ODA-TS) and oleylammonium tosylate (OA-TS) for corrosion protection of steel in 1 M hydrochloric acid solution. Their chemical structures were determined from NMR analyses. The surface activity characteristics of the prepared ODA-TS and OA-TS were evaluated from conductance, surface tension and contact angle measurements. The data indicate the presence of a double bond in the chemical structure of OA-TS modified its surface activity parameters. Potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) measurements, scanning electron microscope (SEM), Energy dispersive X-rays (EDX) analysis and contact angle measurements were utilized to investigate the corrosion protection performance of ODA-TS and OA-TS on steel in acidic solution. The OA-TS and ODA-TS compounds showed good protection performance in acidic chloride solution due to formation of an inhibitive film on the steel surface.
authors.affiliation: Surfactants Research Chair, Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia. aatta@ksu.edu.sa.|Petroleum Application Department, Egyptian Petroleum Research Institute, Cairo 11727, Egypt. aatta@ksu.edu.sa.
authors.forename: Ayman M
authors.initials: AM
authors.lastname: Atta
authors.affiliation: Surfactants Research Chair, Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia. Gamalmah2000@yahoo.com.|Department of Chemistry, Faculty of Science, Helwan University, Helwan 11795, Egypt. Gamalmah2000@yahoo.com.
authors.forename: Gamal A
authors.initials: GA
authors.lastname: El-Mahdy
authors.affiliation: Surfactants Research Chair, Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia. hlohedan@ksu.edu.sa.
authors.forename: Hamad A
authors.initials: HA
authors.lastname: Al-Lohedan
authors.affiliation: Surfactants Research Chair, Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia. ao_ezzat@yahoo.com.
authors.forename: Abdel Rahman O
authors.initials: AR
authors.lastname: Ezzat
mesh_terms: D000327:Adsorption; D003343:Corrosion; D004777:Environment; D052578:Ionic Liquids / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013232:Steel / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D052578:Ionic Liquids; D013232:Steel
keywords: EIS; aggregation; contact angle; hydrophobic ionic liquids; potentiodynamic test; steel