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

Shaaban, Munira; Shalabi, Kamal; Fouda, Abd elaziz; nessim, Maher ibrahim; deyab, M A

doi:10.21608/ejchem.2022.175552.7204

	Inhibitory behavior of new ionic liquids against low carbon steel corrosion in a 1 M HCl solution
Egyptian Journal of Chemistry
Volume 66, Issue 9, September 2023, Page 231-236 PDF (1.1 MB)
Document Type: Original Article
DOI: 10.21608/ejchem.2022.175552.7204
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Authors
Munira Shaaban¹; Kamal Shalabi²; Abd elaziz Fouda ³; Maher ibrahim nessim ⁴; M A deyab ⁵
¹Chemistry Department, Faculty of Science, Mansoura University, Mansoura
²Department of Chemistry, Faculty of Science, Mansoura University, Egypt
³Chemistry,Faculty of Science, Mansoura University, Mansoura, Egypt
⁴Egyptian Petroleum Research Institute
⁵Analysis 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.
Keywords
carbon steel; acid solution; ionic liquids; Corrosion inhibition


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