Green Surfactants from the Type of Fatty Acids as Effective Corrosion Inhibitors for Mild Steel in CO2-saturated NaCl Solution

Авторы: Abd El-Lateef Hany M., Ismayilov I.T., Abbasov V.M., Efremenko E.N., Aliyeva L.I., Qasimov E.E.
Журнал: American Journal of Physical Chemistry
Том: 2
Номер: 1
Год издания: 2013
Первая страница: 16
Последняя страница: 23
DOI: 10.11648/j.ajpc.20130201.13
Аннотация: Four sulfated fatty acid diethanolamine complexes (DC) were synthesized based on four different types of vegetables oils and tested as corrosion inhibitors of mild steel in CO2-saturated 1% NaCl solution at 50 °C. Results obtained show that the surfactants studied are efficient corrosion inhibitors for mild steel even at low concentrations. It is found that the inhibition efficiency increases with the concentration, and the good inhibition efficiencies are reached near their critical micelle concentrations (99.95% at 100 ppm). The adsorption of inhibitor on the steel surface obeys the Langmuir adsorption isotherm equation and was chemisorption. Energy dispersive X-ray fluorescence microscopy (EDRF) observations of the electrode surface confirmed the existence of such an adsorbed film.
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