Inhibition of Aluminium Corrosion in 1M HCl by Pyridoxine Hydrochloride: Thermodynamic and Quantum Chemical Studies

Mamadou Yeo

Laboratoire de Constitution et de Réaction de la Matière, Université Félix Houphouët-Boigny, 22 BP 582 Abidjan 22, Côte d’Ivoire.

Mougo André Tigori *

UFR Environnement, Université Jean Lorougnon Guédé, BP 150 Daloa, Côte d’Ivoire.

Amadou Kouyaté

UFR Environnement, Université Jean Lorougnon Guédé, BP 150 Daloa, Côte d’Ivoire.

Paulin Marius Niamien

Laboratoire de Constitution et de Réaction de la Matière, Université Félix Houphouët-Boigny, 22 BP 582 Abidjan 22, Côte d’Ivoire.

Albert Trokourey

Laboratoire de Constitution et de Réaction de la Matière, Université Félix Houphouët-Boigny, 22 BP 582 Abidjan 22, Côte d’Ivoire.

*Author to whom correspondence should be addressed.


Abstract

Currently, research in the area of corrosion inhibition is focussed on the development of green corrosion inhibitors. It is with this in mind that pyridoxine hydrochloride, which is vitamin B6, has been tested as a corrosion inhibitor of aluminium in 1M HCl by mass loss, Density Functional Theory (DFT) and Quantitative Structure-Property Relationship (QSPR) methods. The results obtained show that the inhibition efficiency increases with concentration but decreases with increasing temperature. This vitamin is adsorbed on aluminium according to the modified Langmuir isotherm and occurs in two modes: physisorption and chemisorption. Thermodynamic adsorption and activation parameters have been determined and discussed. Finally, QSPR approach was used to find the best set of parameters in order to determine the theoretical inhibition efficiencies from the experimental data. Experimental measurements were found in good collaboration with the theoretical results.

Keywords: Corrosion inhibition, aluminium, pyridoxine hydrochloride, mass loss, density functional theory, quantitative structure-property relationship.


How to Cite

Yeo, Mamadou, Mougo André Tigori, Amadou Kouyaté, Paulin Marius Niamien, and Albert Trokourey. 2020. “Inhibition of Aluminium Corrosion in 1M HCl by Pyridoxine Hydrochloride: Thermodynamic and Quantum Chemical Studies”. International Research Journal of Pure and Applied Chemistry 21 (21):20-38. https://doi.org/10.9734/irjpac/2020/v21i2130286.

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