Inhibitory behavior of new ionic liquids against low carbon steel corrosion in a 1 M HCl solution

Document Type : Original Article

Authors

1 Chemistry Department, Faculty of Science, Mansoura University, Mansoura

2 Department of Chemistry, Faculty of Science, Mansoura University, Egypt

3 Chemistry,Faculty of Science, Mansoura University, Mansoura, Egypt

4 Egyptian Petroleum Research Institute

5 Analysis and evaluation department, Egyptian Petroleum Research Institute, Nasr City, Cairo, Egypt

Abstract

Two new imidazolium-based ionic liquids namely, 1-hexadecyl-3-(4-methylbenzyl)-1H-imidazol-3-ium chloride (IL-CH3), and 1-hexadecyl-3-(4-nitrobenzyl)-1H-imidazol-3-ium chloride (IL-NO2) were synthesized. The inhibitory activity of these compounds against the corrosion of low-carbon steel (LCS) in a 1 M HCl was examined by utilize multiple techniques such as polarization (PP) and electrochemical impedance spectroscopy (EIS). The outcome data displayed that the protection efficiency rises with improving the dose of IL’S (IL-CH3, IL-NO2). PP data confirm that they are mixed kind inhibitors. Best performances (i.e. 92.9% and 94.5%) were recorded at maximal IL-CH3 (100 ppm) and IL-NO2 (100 ppm) doses, respectively. These findings imply that the novel ionic liquids (IL-CH3, IL-NO2) are efficient corrosion inhibitors.

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History

  • Receive Date: 18 November 2022
  • Revise Date: 03 December 2022
  • Accept Date: 13 December 2022

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