Synthesis, characterization and corrosion inhibition efficiency of 2-(6-methylpyridin-2-yl)-1H-imidazo[4,5-f][1,10] phenanthroline on mild steel in sulphuric acid
Phenanthroline derivative, 2-(6-methylpyridin-2-yl)-1H-imidazo[4,5-f][1,10] phenanthroline (MIP) was synthesized and characterized by elemental analysis, FT-IR, 1H NMR, 13C NMR, and single crystal X-ray diffraction study. MIP was evaluated as corrosion inhibitor for mild steel in 0.5 M H2SO4 solutio...
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doaj-af75a915fee34272bd90f64821380ddc2020-11-24T23:22:54ZengElsevierArabian Journal of Chemistry1878-53522014-04-017219720710.1016/j.arabjc.2010.10.025Synthesis, characterization and corrosion inhibition efficiency of 2-(6-methylpyridin-2-yl)-1H-imidazo[4,5-f][1,10] phenanthroline on mild steel in sulphuric acidN.O. Obi-Egbedi0I.B. Obot1A.O. Eseola2Department of Chemistry, University of Ibadan, Ibadan, NigeriaDepartment of Chemistry, Faculty of Science, University of Uyo, P.M.B 1017, Uyo, Akwa Ibom State, NigeriaChemical Sciences Department, Redeemer’s University, Redemption City, Km. 46, Lagos – Ibadan Expressway, NigeriaPhenanthroline derivative, 2-(6-methylpyridin-2-yl)-1H-imidazo[4,5-f][1,10] phenanthroline (MIP) was synthesized and characterized by elemental analysis, FT-IR, 1H NMR, 13C NMR, and single crystal X-ray diffraction study. MIP was evaluated as corrosion inhibitor for mild steel in 0.5 M H2SO4 solution using gravimetric and UV–Visible spectrophotometric methods at 303–333 K. Results obtained show that MIP acts as inhibitor for mild steel in H2SO4 solution. The inhibition efficiency was found to increase with increase in MIP concentration but decreased with temperature. Activation parameters and Gibbs free energy for the adsorption process using statistical physics were calculated and discussed. The UV–Visible absorption spectra of the solution containing the inhibitor after the immersion of mild steel specimen indicate the formation of a MIP-Fe complex.http://www.sciencedirect.com/science/article/pii/S1878535210002303Phenanthroline derivativeMild steelCorrosion inhibitorsSulphuric acidThermodynamic |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
N.O. Obi-Egbedi I.B. Obot A.O. Eseola |
spellingShingle |
N.O. Obi-Egbedi I.B. Obot A.O. Eseola Synthesis, characterization and corrosion inhibition efficiency of 2-(6-methylpyridin-2-yl)-1H-imidazo[4,5-f][1,10] phenanthroline on mild steel in sulphuric acid Arabian Journal of Chemistry Phenanthroline derivative Mild steel Corrosion inhibitors Sulphuric acid Thermodynamic |
author_facet |
N.O. Obi-Egbedi I.B. Obot A.O. Eseola |
author_sort |
N.O. Obi-Egbedi |
title |
Synthesis, characterization and corrosion inhibition efficiency of 2-(6-methylpyridin-2-yl)-1H-imidazo[4,5-f][1,10] phenanthroline on mild steel in sulphuric acid |
title_short |
Synthesis, characterization and corrosion inhibition efficiency of 2-(6-methylpyridin-2-yl)-1H-imidazo[4,5-f][1,10] phenanthroline on mild steel in sulphuric acid |
title_full |
Synthesis, characterization and corrosion inhibition efficiency of 2-(6-methylpyridin-2-yl)-1H-imidazo[4,5-f][1,10] phenanthroline on mild steel in sulphuric acid |
title_fullStr |
Synthesis, characterization and corrosion inhibition efficiency of 2-(6-methylpyridin-2-yl)-1H-imidazo[4,5-f][1,10] phenanthroline on mild steel in sulphuric acid |
title_full_unstemmed |
Synthesis, characterization and corrosion inhibition efficiency of 2-(6-methylpyridin-2-yl)-1H-imidazo[4,5-f][1,10] phenanthroline on mild steel in sulphuric acid |
title_sort |
synthesis, characterization and corrosion inhibition efficiency of 2-(6-methylpyridin-2-yl)-1h-imidazo[4,5-f][1,10] phenanthroline on mild steel in sulphuric acid |
publisher |
Elsevier |
series |
Arabian Journal of Chemistry |
issn |
1878-5352 |
publishDate |
2014-04-01 |
description |
Phenanthroline derivative, 2-(6-methylpyridin-2-yl)-1H-imidazo[4,5-f][1,10] phenanthroline (MIP) was synthesized and characterized by elemental analysis, FT-IR, 1H NMR, 13C NMR, and single crystal X-ray diffraction study. MIP was evaluated as corrosion inhibitor for mild steel in 0.5 M H2SO4 solution using gravimetric and UV–Visible spectrophotometric methods at 303–333 K. Results obtained show that MIP acts as inhibitor for mild steel in H2SO4 solution. The inhibition efficiency was found to increase with increase in MIP concentration but decreased with temperature. Activation parameters and Gibbs free energy for the adsorption process using statistical physics were calculated and discussed. The UV–Visible absorption spectra of the solution containing the inhibitor after the immersion of mild steel specimen indicate the formation of a MIP-Fe complex. |
topic |
Phenanthroline derivative Mild steel Corrosion inhibitors Sulphuric acid Thermodynamic |
url |
http://www.sciencedirect.com/science/article/pii/S1878535210002303 |
work_keys_str_mv |
AT noobiegbedi synthesischaracterizationandcorrosioninhibitionefficiencyof26methylpyridin2yl1himidazo45f110phenanthrolineonmildsteelinsulphuricacid AT ibobot synthesischaracterizationandcorrosioninhibitionefficiencyof26methylpyridin2yl1himidazo45f110phenanthrolineonmildsteelinsulphuricacid AT aoeseola synthesischaracterizationandcorrosioninhibitionefficiencyof26methylpyridin2yl1himidazo45f110phenanthrolineonmildsteelinsulphuricacid |
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