Title of article :
Saccocalyx satureioides as corrosion inhibitor for carbon steel in acid solution
Author/Authors :
Benahmed, M. Universite Larbi Tebessi - Laboratoire des Molecules Bioactives et Applications, Algeria , Djeddi, N. Universite Larbi Tebessi - Laboratoire des Molecules Bioactives et Applications, Algeria , Akkal, S. Universite Mentouri Constantine - Faculte de Sciences exactes - Departement de Chimie, Laboratoire de Phytochimie et Analyses physicochimiques et Biologiques, Algeria , Laouar, H. Universite Ferhat Abbas de Setif - Departement de Biologie, Laboratoire de Valorisation des Ressources Naturelles Biologiques, Algeria
Abstract :
The inhibitory effect of the crude ethyl acetate extract of Saccocalyx satureioides was estimated on the corrosion of carbon steel (X52) in 1 M HCl solution sing weight loss measurement, potentiodynamic polarization, electrochemical impedance spectroscopy and scanning electron microscopy techniques. Potentiodynamic polarization curves indicated that the plants extract behaves as a mixed-type inhibitor. The adsorption of the inhibitor on the carbon steel surface was found to follow Freundlich adsorption isotherm. The free energies, enthalpies and entropies for the adsorption and dissolution process were discussed in details. The inhibiting action increases with increasing concentration of the extract. The results obtained show that the extract of the aerial parts of Saccocalyx satureioides could serve as an effective corrosion inhibitor of carbon steel (X52) in hydrochloric acid medium
Keywords :
Carbon steel X52 , Saccocalyx satureioides , Inhibition
Journal title :
International Journal of Industrial Chemistry (IJIC)
Journal title :
International Journal of Industrial Chemistry (IJIC)
