Article ID Journal Published Year Pages File Type
193951 Electrochimica Acta 2007 10 Pages PDF
Abstract

Three long chain fatty acid substituted aminoanthraquinone (AAQ) were synthesized in the laboratory and evaluated as corrosion inhibitors for steel (API 5L-X60) in diesel–water mixtures at room temperature by weight loss and electrochemical studies. Potentiodynamic polarization studies carried out at room temperature on steel (API 5L-X60) in diesel with water containing 120 ppm of chloride and 50 ppm of aminoanthraquinone (AAQ) derivative showed that all the investigated compounds are of anodic type. The results obtained indicate that 1-aminoanthraquinone derivatives are good corrosion inhibitors in diesel–water mixtures. Oleic acid substituted aminoanthraquinone was found to be the best corrosion inhibitor. It exhibited 92% inhibition efficiency against the corrosion of API 5L-X60 steel in diesel–water mixtures. The surface analysis by AFM indicates the adsorption of synthesized inhibitors on the metal surface.

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Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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