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Title: INHIBITION OF MILD STEEL CORROSION IN THE PRESENCE OF P-NITROPHENYL-2- IMIDAZOLINE
Authors: Nalini, D
Rajalakshmi, R
Keywords: data quality
materials and corrosion
flowline corrosion
Artificial Intelligence
Issue Date: 17-Mar-2013
Publisher: NACE - International Corrosion Conference Series
Abstract: p-nitrophenyl-2-imidazoline (PNP2I) was synthesized in the laboratory and characterized by Fourier Transform Infrared Spectroscopy (FTIR) spectra and evaluated as a corrosion inhibitor for mild steel in 1M Hydrochloric acid and 0.5M Sulphuric acid by weight loss method and electrochemical studies. Results obtained revealed that PNP2I was a very good inhibitor and behaved better in 0.5M H2SO4 than in 1M HCl. Potentiodynamic polarization curves showed that PNP2I is a mixed type inhibitor. The ability of the studied inhibitor to inhibit the corrosion of mild steel was due to the presence of two hetero nitrogen atoms on the imidazoline ring and the phenyl ring attached to the imidazoline ring. The adsorption of PNP2I on the mild steel surface in both acidic media followed the Langmuir adsorption isotherm. Surface analyses were also carried out, to establish the mechanism of the corrosion inhibition of mild steel in acidic solutions. Good inhibition efficiency was evidenced in both acid solutions, furnishing an inhibition efficiency of 80 %.
URI: https://onepetro.org/NACECORR/proceedings-abstract/CORR13/All-CORR13/NACE-2013-2189/121359
ISSN: 03614409
Appears in Collections:3.Conference Paper (07)

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