Experimental Evaluation and Theoretical Study of Imidazolium and Benzimidazolium. Derivatives as Corrosion Inhibitors of Mild Steel in a 0.5 M H2SO4 Solution

• Autor(a) principal: Said,Mohamed Elhadi
• Data de Publicação: 2023
• Outros Autores: Bouchouit,Mehdi, Zaiter,Abdellah, Mezhoud,Bilel, Bouacida,Sofiane, Chibani,Aissa, Bouraiou,Abdelmalek
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042023000200081
• topic: imidazolium and benzimidazolium salts; MS; polarization; EIS; WL and corrosion inhibition

Abstract (dimOHmIm)+,I- and (dimOHmBim)+,I- were investigated as a corrosion inhibitors for MS in 0.5 M H2SO4 using gravimetric, PDP and EIS techniques. Polarization curves revealed that both compounds acted as mixed-type inhibitors, and that corrosion IE% increased with their higher concentrations. The adsorption of both inhibitors onto the MS surface obeyed Langmuir’s isotherm. The compound II showed a higher corrosion IE% than that of I. The quantum chemical calculations were applied to investigate the relationship between the two azolium salts derivatives electronic properties and their corrosion IE%.