A New Green Ionic Liquid-Based Corrosion Inhibitor for Steel in Acidic Environments

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...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2015-06, Vol.20 (6), p.11131-11153
Main Authors: Atta, Ayman M, El-Mahdy, Gamal A, Al-Lohedan, Hamad A, Ezzat, Abdel Rahman O
Format: Article
Language:English
Subjects:
Adsorption
aggregation
Carbon steel
Chlorides
Contact angle
Corrosion
Corrosion inhibitors
Corrosion prevention
Crude oil
Derivatives
EIS
Electrochemical impedance spectroscopy
Environment
hydrophobic ionic liquids
Ionic Liquids - chemistry
Magnetic Resonance Spectroscopy
Metals
potentiodynamic test
Scanning electron microscopy
steel
Steel - chemistry
Structural steels
Surface chemistry
Surface Properties
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Summary: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.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules200611131