Novel cationic gemini surfactants as corrosion inhibitors for carbon steel pipelines

Performance of nonionic surfactants derived from tannic acid in preventing the acidic dissolution of carbon steel

“…15 L inhibitors oncarbon steel surface obeys Langmuir adsorption isotherm and the inhibition process is due to the adsorption of inhibitor molecules on the metal surface (Table 3).Meanwhile, the obtained slopes were close to 1, which suggest an associative adsorption of inhibitor molecules at the metal surface (Hegazy et al, 2010). It is well recognized that the first step in inhibition of metallic corrosion is the adsorption of organic inhibitors on the metal/solution interface.That adsorption depends on:chemical structure of the molecule, temperature and electrochemical potential at metal/solution interface.…”

The synergistic inhibition effect between imidazoline-based dissymmetric bis-quaternary ammonium salts and thiourea on Q235 steel in CO2 corrosion process

“…The results have good agreement with the weight-loss results, although the absolute g values are different. These differences are likely due to the different test methods [17].…”

Characterization of the corrosion products formed on mild steel in acidic medium with N-octadecylpyridinium bromide as corrosion inhibitor

“…These compounds possess a large number of physicochemical properties [1][2][3][4]; namely, good electrical conductivity, solvent transport and a relatively wide electrochemical window. Ionic liquids have important electrochemical applications: as electrolytes [5][6][7][8][9][10], for example in HCl [11][12][13] and H 2 SO 4 solution [14,15]. Derivatives of alkylpyridinium bromide were reported as corrosion inhibitor in aqueous media of sulfuric acid [16,17].…”