Olusola, O. James and Ajanaku, K. O. and Ogunniran, K. O. and Ajani, Olayinka O. and John, M. O. (2009) Adsorption Behaviour of [(4-Hydroxy-6-methyl-2-oxo-2Hpyran- 3-yl)-(4-methoxy-phenyl)-1methyl]-urea on Stainless Steel in Phosphoric Media. Portugaliae Electrochimica Acta, 27 (5). pp. 591-598.
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Abstract
The adsorption of [(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)-(4-methoxy-phenyl)-methyl]-urea on iron in phosphoric media was studied by using electrochemical technique. The adsorption mechanism was investigated using adsorption isotherms. The experimental data fit localized adsorption models. The values for free energy of adsorption, o DGads , were also calculated at each surface coverage, �, of the studied compound by applying the mathematical model of Bockris – Swinkels adsorption isotherm. The variation of free energy of adsorption o ads DG with surface coverage, �, was interpreted in terms of deviation from ideal condition assumed in Langmuir model. A possible adsorption model of HPU2 molecules on to the metal surface was suggested.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Corrosion inhibitor, Bockris – Swinkels adsorption isotherm, free energy,stainless steel. |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Chemistry |
| Depositing User: | Mrs Hannah Akinwumi |
| Date Deposited: | 09 Apr 2019 13:35 |
| Last Modified: | 09 Apr 2019 13:35 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/12584 |
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