Experimental and Quantum Chemical Studies on the Corrosion Inhibition potential of ?-Carotene for Mild Steel in Solution of HCl

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Uduak Bassey Essien
Emeka Ogoko

Résumé

The study was designed to investigate the corrosion inhibition potential of beta carotene for mild steel in acidic medium. Gravimetric, gasometric and polarization methods were used for the study. The results obtained indicated excellent corrosion efficiencies from all the used monitoring methods. Correlation between results obtained from different methods were also excellent. Carotene acted as an adsorption inhibitor. Its adsorption is exothermic, spontaneous and reflected physiosorption adsorption mechanism. Langmuir and Temkin adsorption isotherms best fitted the adsorption characteristics of the inhibitor. Computational chemistry investigation revealed semi empirical values that compares favourably with those of excellent corrosion inhibitors. The sites for electrophilic and nucleophilic attacks resided in the C(35) and C(14) atoms respectively.

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Essien, U. B. ., & Ogoko, E. . (2020). Experimental and Quantum Chemical Studies on the Corrosion Inhibition potential of ?-Carotene for Mild Steel in Solution of HCl. Nigerian Journal of Pharmaceutical and Applied Science Research, 8(2), 89–102. Consulté à l’adresse https://nijophasr.net/index.php/nijophasr/article/view/296
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Uduak Bassey Essien

Department of Chemistry, University of Calabar, Calabar, Cross River State, Nigeria

Emeka Ogoko

Department of Applied Science, National Open University of Nigeria, Jabi, FCT, Abuja, Nigeria

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