NDLI: Corrosion inhibition of aluminium in acid solutions by some imidazoline derivatives

Content Provider	Springer Nature Link
Author	Quraishi, M. A. Rafiquee, M. Z. A. Khan, Sadaf Saxena, Nidhi
Copyright Year	2007
Abstract	2-Pentadecyl-1,3-imidazoline (PDI), 2-Undecyl-1,3-imidazoline (UDI), 2-Heptadecyl-1,3-imidazoline (HDI), 2-Nonyl-1,3-imidazoline (NI) were synthesized and characterized by FT-IR and NMR Studies. The corrosion inhibition properties of these compounds on aluminium in 1 M HCl and 0.5 M H$_{2}$SO$_{4}$ were investigated by weight loss, potentiodynamic polarization, electrochemical impedance and scanning electron microscopic techniques. The weight loss study showed that the inhibition efficiency increases with increase in the concentration of the inhibitor and was found to be inversely related to time and temperature while it shows no significant change with increase in acid concentration. The effectiveness of these inhibitors were in the order of UDI > NI > PDI > HDI .The values of activation energy, free energy of adsorption, heat of adsorption, enthalpy of activation and entropy of activation were also calculated to elaborate the mechanism of corrosion inhibition. The adsorption of these compounds on aluminium surface follows the Langmuir adsorption isotherm. The potentiodynamic polarization data show that the compounds studied are mixed type inhibitors. Electrochemical impedance was used to investigate the mechanism of corrosion inhibition. The surface characteristics of inhibited and uninhibited metal samples were investigated by scanning electron microscopy (SEM).
Starting Page	1153
Ending Page	1162
Page Count	10
File Format	PDF
ISSN	0021891X
Journal	Journal of Applied Electrochemistry
Volume Number	37
Issue Number	10
e-ISSN	15728838
Language	English
Publisher	Springer Netherlands
Publisher Date	2007-07-31
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Corrosion inhibitors Aluminum Scanning electron microscopy Potentiodynamic polarization Electrochemical impedance Industrial Chemistry/Chemical Engineering Physical Chemistry Electrochemistry
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Chemical Engineering Electrochemistry

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