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Studies of the anticorrosion property of a newly synthesized Green isoxazolidine for API 5L X60 steel in acid environment

Alhaffar, Mouheddin T. and Umoren, Saviour A. and Obot, Ime B. and Ali, Shaikh A. and Solomon, Moses M. (2019) Studies of the anticorrosion property of a newly synthesized Green isoxazolidine for API 5L X60 steel in acid environment. Journal of Material and Technology, 8 (5). pp. 4399-44416.

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tThe potential of an environmentally friendly novel synthesized and characterized isoxazoli-dine derivative namely 5-(4-dodecyloxy-3-methoxybenzyl)-2-methylisoxazolidine (DMBMI)as anticorrosion agent for carbon steel in 1 mol/L HCl solution was investigated using gravi-metric and electrochemical techniques. Kinetics parameters of the corrosion process andthe thermodynamic data of adsorption of the organic molecule on the carbon steel surfacewas also assessed in order to characterize the performance of the studied compound as acorrosion inhibitor. The solubility, toxicity and the state of the molecule at the acidic pH(1 mol/L HCl) was predicted. It was found that the synthesized compound is green (envi-ronmentally friendly) with an optimum solubility of 23.8 mg/L. Also the molecule exists100 percent in protonated form in 1 mol/L HCl (pH = 0). The molecule possesses anticorro-sion property against steel corrosion in acid environment. Corrosion retardation efficacy isdependent on concentration and temperature. DMBMI exhibited concentration dependentcorrosion inhibition ability influencing mainly anodic metal dissolution based on potentio-dynamic polarization data. Addition of KI through the mechanism of competitive adsorptionenhanced the inhibition efficiency considerably. The active sites for the interaction of DMBMIwith steel surface was calculated using quantum chemical method while the adsorptionenergy between the inhibitor and steel surface was derived via Monte Carlo simulations.Results from theoretical studies and surface analysis are in conformity and reveal that theO and N heteroatoms in the synthesized molecule are the interaction centers.

Item Type: Article
Uncontrolled Keywords: Isoxazolidine compoundsTheoretical studiesCorrosion inhibitorAcid corrosionSteel
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User: nwokealisi
Date Deposited: 29 Mar 2023 12:12
Last Modified: 29 Mar 2023 12:12

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