orrosion is an inevitable process, but its control is the goal of the researchers using organic inhibitors. So, newly successfully prepared ρ-substituted imine compounds namely;(E)-N,N-dimethyl1–4-((tolylimino)methyl)aniline (SB-CH3) and (E)-4 (((4methoxyphenyl)imino)methyl)-N,N-dimethylaniline
(SB–OCH3) have been fabricated to control the C-steel dissolution in 1 M HCl. Hammett concept and theoretical calculated parameters were applied to predict the adsorption affinity of the prepared imine derivatives and the laboratory gravimetric and electrochemical tests accompanied with surface analysis tools
were conducted to confirm these predictions. The fabricated imine compounds suppressed the C-steel reaction with efficacy of more than 90%. The SB–OCH3 exhibited higher adsorption affinity than SB-CH3 and
they acted as hydride C-steel corrosion inhibitors and followed Langmuir isotherm. The G∗
adsvalues of
C-steel reactions in presence of these compounds were around -37 kJmol−1. The inhibition performance
of SB-CH3 and SB–OCH3 was function in their concentrations, molecular weight, and solution temperature. SB-CH3 and SB–OCH3 suppressed C-steel reaction at high temperature and the SB–OCH3 showed
highest efficiency (76.8%) at 60 °C. The activated thermodynamic parameters of C-steel reaction in existence and nonexistence of 1 × 10−3 M imine compounds were calculated and discussed. The comparison
findings with the previously published compounds confirmed the superiority of the understudied imine
derivatives. |
