Corrosion Inhibition of Carbon Steel in Sulfuric Acid by [BMIm] [Lys] Amino Acid Ionic Liquids

Abstract:

The corrosion inhibition effect and mechanism of the amino acid ionic liquids—1-butyl-3-methylimidazolium Lysine ([BMIm][Lys]) for carbon steel in 5% H₂SO₄ solution are investigated by electrochemical tests. The results indicate that the [BMIm][Lys] has a good inhibition performance for the carbon steel in 5% H₂SO₄ solution. The corrosion inhibition efficiency improves with the increase of the concentration, which arrives at 95% ultimately. The study also shows that the inhibitors are mixed-type ones. The adsorption of the inhibitor molecules on the carbon steel surface obeys Langmuir adsorption isotherm.

• Periodical: Advanced Materials Research (Volumes 476-478)
• Pages: 1434-1440
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.476-478.1434
• Online since: February 2012
• Authors: Min Gong, Chun Mei Jiang, Xing Wen Zheng, Xiang Mei Zeng, Xiu Zhou Lin
• Keywords: Amino Acid Ionic Liquids, Carbon Steel, Corrosion Inhibitor, Sulfuric Acid

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