Adsorption of IFKhAN-92 Corrosion Inhibitor from Acidic Phosphate Solution on Low Carbon Steel
| Autor: | Yu. I. Kuznetsov, A.Yu. Luchkin, Ya.G. Avdeev, M. V. Tyurina |
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| Rok vydání: | 2017 |
| Předmět: |
Carbon steel
Chemistry 020209 energy Organic Chemistry Metals and Alloys 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Phosphate Surfaces Coatings and Films Dielectric spectroscopy Corrosion inhibitor chemistry.chemical_compound Reaction rate constant Adsorption Adsorption kinetics Chemisorption 0202 electrical engineering electronic engineering information engineering Materials Chemistry engineering 0210 nano-technology Nuclear chemistry |
| Zdroj: | Protection of Metals and Physical Chemistry of Surfaces. 53:1247-1251 |
| ISSN: | 2070-206X 2070-2051 |
| DOI: | 10.1134/s2070205117070048 |
| Popis: | Adsorption of an IFKhAN-92 inhibitor, triazole derivative, on low carbon steel from 2.0 M H3PO4 (22 ± 1°C) has been studied using impedance spectroscopy. It is demonstrated that its adsorption is described by the Temkin isotherm with relatively high free adsorption energy (–ΔGads) = 51 ± 1 kJ/mol. It is suggested that the inhibitor adsorption is of chemisorption pattern, which is confirmed by description of adsorption kinetics by the Roginsky–Zeldovich equation. It is illustrated that the addition of 0.5 mM KCNS into H3PO4 solution increases the rate constant in the Roginsky–Zeldovich equation for adsorption of IFKhAN-92 on a steel surface and, consequently, accelerates this process in time. |
| Databáze: | OpenAIRE |
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