review · Journal of Ionic Liquids
Ionic liquids serve as eco-friendly corrosion inhibitors across several metals, including aluminium, copper, magnesium, steel, and their corresponding alloys. A broad range of chemical families, predominantly imidazolium, triazolium, thiazolium, phosphonium, pyridium, ammonium, pyrrolidinium, and pyridinium-based compounds, have been evaluated for this purpose. Research assesses these substances within acidic, basic, and saline aqueous media, showing varying degrees of inhibition efficiency across different operational contexts. The effectiveness of corrosion prevention depends heavily on specific parameters, such as the chemical structure, molecular weight, and concentration of the chosen ionic liquid, alongside the experimental techniques applied during testing. Reviewing these collected findings provides an overview of how these alternative chemical agents function under diverse experimental conditions to mitigate degradation across industrial metals.
Corrosion causes severe damage to metallic infrastructure, prompting a search for environmentally sound protective chemicals. Understanding how different ionic liquids behave across varied metals and chemical environments helps researchers identify greener alternatives to traditional, toxic corrosion inhibitors. This knowledge supports cleaner industrial maintenance practices by establishing how chemical properties dictate protective performance.
The reviewed research operates at an early laboratory stage, focusing on experimental evaluations and efficiency comparisons across chemical classes. Potential end users include industrial formulators and asset maintenance operators seeking non-toxic inhibitors for metal alloys exposed to acidic, basic, or saline environments. However, moving toward commercial use requires scaling testing beyond benchtop media, as the abstract does not report formulation stability, cost, or field validation.
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This review examines the corrosion inhibition performance of ionic liquids used as corrosion inhibitors for aluminum, copper, magnesium, steel, and their alloys in various aqueous media. The predominant classes of ionic liquids employed are imidazolium, triazolium, thiazolium, phosphonium, pyridium, ammonium, pyrrolidinium, and pyridinium-based ionic liquids. The pieces of literature revealed that the studies were carried out in acid, base, and salt media and an array of inhibition efficiencies was obtained. Herein, the possible influence of experimental techniques, ionic liquid concentration, ionic liquid structure, and molecular weight on the inhibition efficiency are tabulated and discussed.
This page summarises published work. The authoritative version sits with the publisher.
DOI: 10.1016/j.jil.2024.100098
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