Abstract
Modelling of the adsorption of blocking-type organic inhibitors on a corroding metal surface in aqueous solutions has been carried out. The method is based on the assumption of a Frumkin-type interaction between the adsorbed species and enables evaluation of the maximum surface excess of the adsorbed species and hence the area occupied by a single adsorbate.
This adsorption model approach is applied to study the inhibition of iron corrosion in H2SO4 solutions by indenone derivatives. Combining electrochemical (a.c. impedance and d.c. polarization) methods with quantum chemical calculations of the chemical structure of the compounds studied, a mechanism of adsorption of the inhibitors on iron surface is hypothesized. The correlation between chemical structure, adsorption capability and inhibiting efficiency of indenone derivatives is discussed.
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Raicheff, R., Betova, I., Bojinov, M., Lazarova, E. (1994). Modelling the Adsorption of Organic Corrosion Inhibitors on Metal Surfaces. In: Trethewey, K.R., Roberge, P.R. (eds) Modelling Aqueous Corrosion. NATO ASI Series, vol 266. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1176-8_4
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DOI: https://doi.org/10.1007/978-94-011-1176-8_4
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