Experimental and theoretical studies of five imidazolium-based ionic liquids as corrosion inhibitors for mild steel in H₂S and HCl solutions

Temperature Effect on the Corrosion Inhibition of Carbon Steel by Polymeric Ionic Liquids in Acid Medium

“…As for the VP monomer, it exhibits a distribution of the molecular orbitals and charge similar to that of VAA [ 74 ]. On the other hand, VBIB displays the HOMO and LUMO orbitals through the imidazolium ring as reported by Cui et al [ 75 ], whereas the positive charge was localized in N and C=C of the imidazolium ring and the negative charge in the bromide anion. These results confirm that Br and C=C and the heteroatoms N and O work as reactive sites in the different polymeric blocks that favor the adsorption process through them.…”

Upgrading of the biomass-derived platform compound 5-hydroxymethylfurfural to high-value chemicals: an environment-friendly corrosion inhibitor

“…The corrosion inhibitor is either an anodic or cathodic type when the maximum shift in E corr exceeds 85 mV; the inhibitor is a mixed-type inhibitor when the change in the corrosion potential is <85 mV. 15,39 The maximum shift in E corr for 1b is <85 mV, indicating the mixed-type inhibitor behaviour of 1b. Moreover, the inhibitor concentrations of 1b considerably affect β a and β c (Table 1).…”

“…This suggested that the inhibitor could inhibit both the cathodic and anodic reactions, and hence 1b could be considered a mixed-type corrosion inhibitor. 15 Fig. 1…”

“…13 However, the effect of acid in industrial acid descaling, cleaning and other processes can result in severe corrosion damage of metallic equipment and pipelines. 14,15 Corrosion inhibitors have always been used in industrial production in a bid to protect metals from corrosion. [16][17][18][19] The common corrosion inhibitors fall into two categories: inorganic and organic compounds.…”

Bolaamphiphilic microstructural polyphenol flavonoids as sustainable high efficacy coating for aluminium surface in aqueous solution

“…It is highly electropositive and has a high resistance to corrosion due to the presence of a thin oxide film. [ 14,15 ] Polyphenol flavonoids as an extract of onion skin has been introduced extensively as an efficient green inhibitor on metals; boiled red onion skin extract has a high coating efficacy against corrosion of tin in acidic solution. [ 16 ] It also reached maximum coating efficacy on carbon steel.…”