Journal
ARABIAN JOURNAL OF CHEMISTRY
Volume 7, Issue 3, Pages 319-326Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.arabjc.2010.11.005
Keywords
Corrosion inhibition; Furan derivatives; Mild steel; Adsorption; Molecular dynamics; simulation
Categories
Funding
- Taif University [1-431-713]
- Center of Research Excellence in Corrosion (CoRE) located at King Fahd University, [CR-03-2010]
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The efficiency of three furan derivatives, namely 2-(p-toluidinylmethyl)-5-methyl furan (Inh. A), 2-(p-toluidinylmethyl)-5-nitro furan (Inh. B) and 2-(p-toluidinylmethyl)-5-bromo furan (Inh. C), as possible corrosion inhibitors for mild steel in 1.0 M HCl, has been determined by weight loss and electrochemical measurements. These compounds inhibit corrosion even at very low concentrations, and 2-(p-toluidinylmethyl)-5-methyl furan (Inh. A) is the best inhibitor. Polarization curves indicate that all compounds are mixed-type inhibitors, affecting both cathodic and anodic corrosion currents. Adsorption of furan derivatives on the mild steel surface follows the Langmuir adsorption isotherm, and the calculated Gibbs free energy values confirm the chemical nature of the adsorption. Monte Carlo simulations technique incorporating molecular mechanics and molecular dynamics can be used to simulate the adsorption of furan derivatives on mild steel surface in 1.0 M HCl. (C) 2010 Production and hosting by Elsevier B.V. on behalf of King Saud University.
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