James, O. O. and Ajanaku, K. O. and Ogunniran, K. O. and Ajani, O. O. and Siyanbola, T. O. and John, M. O. (2011) Adsorption Behaviour of Pyrazolo [3, 4-b] Pyridine on Corrosion of Stainless Steel in HCl Solutions. Trends in Applied Sciences Research, 6 (8). pp. 910-917. ISSN 1819-3579
|
PDF (Journal article)
- Published Version
Download (482Kb) | Preview |
Abstract
The properties of stainless steel makes the alloy suitable for many application; but this tends to change at very aggressive conditions thereby making its properties to fail. The corrosion inhibition efficiency of 2-(4-Methyl-3-oxo-2-phenyl-2, 3-dihydro-1H-pyrazolo [3, 4-b] pyridin-4-yl) acetic acid butylester (PP) on stainless steel in HCl solution was studied by weight loss method. The adsorption mechanism was investigated using adsorption isotherms. The experimental data fit Flory-Huggins and Thermodynamic/El-Awady models. The values for free energy of adsorption, ΔGoads, of PP at different surface coverage, θ, were also calculated by applying the mathematical model of Bockris-Swinkels adsorption isotherm. The variation of free energy of adsorption ΔGoads.with surface coverage, θ, was rationalised in term of interaction between adsorbed PP molecules. A possible adsorption model of PP molecules on to the steel surface was suggested.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Corrosion inhibitor, stainless steel, free energy, Bockris-Swinkels adsorption isotherm |
| Subjects: | Q Science > QD Chemistry T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Chemistry |
| Depositing User: | Dr. Kolawole Ajanaku |
| Date Deposited: | 20 Jun 2011 20:35 |
| Last Modified: | 16 Jan 2017 12:48 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/192 |
Actions (login required)
 |
View Item |
