1-Dodecyl-4-(((3-morpholinopropyl)imino)methyl)pyridin-1-ium bromide as a novel corrosion inhibitor for carbon steel during phosphoric acid production

1-Dodecyl-4-(((3-morpholinopropyl)imino)methyl)pyridin-1-ium bromide as a novel corrosion inhibitor for carbon steel during phosphoric acid production

The corrosion inhibition properties of novel cationic surfactant on carbon steel in 7 M H3PO4 solutionhave been determined by weight loss, Tafel polarization and electrochemical impedance spectroscopy(EIS) methods. The results revealed that the synthesized cationic surfactant is a good corrosion inhibitor. The inhibition efficiency increases with increasing the inhibitor concentration but decreases with thetemperature increasing. The adsorption of inhibitor was found to obey the Langmuir adsorptionisotherm. Potentiodynamic polarization studies showed that the inhibitor acts as a mixed-type inhibitor. EIS results were analyzed to model inhibition process through appropriate equivalent circuit model.

The corrosion inhibition properties of novel cationic surfactant on carbon steel in 7 M H3PO4 solutionhave been determined by weight loss, Tafel polarization and electrochemical impedance spectroscopy(EIS) methods. The results revealed that the synthesized cationic surfactant is a good corrosion inhibitor. The inhibition efficiency increases with increasing the inhibitor concentration but decreases with thetemperature increasing. The adsorption of inhibitor was found to obey the Langmuir adsorptionisotherm. Potentiodynamic polarization studies showed that the inhibitor acts as a mixed-type inhibitor. EIS results were analyzed to model inhibition process through appropriate equivalent circuit model.