Synthesis and Characterization of 2-amino-5- chloro benzophenoxime and Using as Corrosion Inhibitor for low-carbon steel (SS41) alloy

Abstract

 Inhibition is a key approach for reducing corrosion in low-carbon steel alloys. In this investigation, an organic molecule (2-amino-5-chloro benzophenoxime) was produced and employed to preserve a low-carbon steel (SS41) alloy in a 0.5 M H₂SO₄ solution at (25, 35, 45, and 55) °C. A synthetic chemical was used at six concentrations (50, 100, 150, 200, 250, and 300 ppm). Corrosion tests, inhibited surface analysis, and other thermodynamic methods were utilized to analyze the inhibition process. FT-IR, ¹HNMR, and ¹³CNMR were employed to characterize the produced component. The corrosion test (weight loss) revealed a high inhibition efficiency (IE%). 2-amino-5-chloro benzophenoxime yielded 87.77% at 55 °C and 300 ppm in 0.5 M H₂SO₄. Three adsorption isotherms were used to investigate inhibitor adsorption. Langmuir, Freundlich, and Temkin isotherms are all examples of adsorption isotherms. All inhibitors create a monolayer on the metal surface, resulting in the Langmuir adsorption isotherm. SEM examination of the inhibited surface revealed that the chemical molecules were adsorbing on the low-carbon steel (SS41) surface, causing inhibition. Surface roughness was detected using AFM images.