Corrosion Inhibition of Carbon Steel Pipelines by Some New Amphoteric and Di-cationic Surfactants in Acidic Solution by Chemical and Electrochemical Methods

The inhibition effect of new synthesized amphoteric and di-cationic surfactants, namely: 4-(((1-dodecylpyridin-1-ium bromide)-4-yl)methylene)amino)benzoate sodium (I) and 1-dodecyl-4-(((1-dodecylpyridin-1-ium-4-yl)imino)methyl)pyridin-1-ium bromide (II), respectively, on the corrosion of carbon stee...

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Bibliographic Details
Published in:Journal of surfactants and detergents 2016-07, Vol.19 (4), p.861-871
Main Authors: Hegazy, M. A., Azzam, Eid M. S., Kandil, Nadia G., Badawi, A. M., Sami, R. M.
Format: Article
Language:English
Subjects:
Acid inhibition
Adsorption
Aquatic Pollution
Carbon steel
Chemistry
Chemistry and Materials Science
Corrosion
EIS
Electrochemistry
Industrial Chemistry/Chemical Engineering
Original Article
Physical Chemistry
Pipelines
Polarization
Polymer Sciences
Surfaces and Interfaces
Surfactants
Thin Films
Waste Water Technology
Water Management
Water Pollution Control
Weight loss
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Summary:The inhibition effect of new synthesized amphoteric and di-cationic surfactants, namely: 4-(((1-dodecylpyridin-1-ium bromide)-4-yl)methylene)amino)benzoate sodium (I) and 1-dodecyl-4-(((1-dodecylpyridin-1-ium-4-yl)imino)methyl)pyridin-1-ium bromide (II), respectively, on the corrosion of carbon steel in 1 M HCl have been investigated using electrochemical impedance spectroscopy, Tafel polarization and weight loss measurements. The inhibition efficiencies obtained from all methods employed are in good agreement with each other. Tafel polarization studies showed that the surfactants are mixed type inhibitors. The adsorption of two compounds onto the surface of carbon steel in 1 M HCl obeys the Langmuir isotherm. Adsorption thermodynamic parameters reveal that the adsorption of inhibitors is a mixture of physical and chemical adsorption.
ISSN:1097-3958
1558-9293
DOI:10.1007/s11743-016-1824-9