Experimental evaluation of quinolinium and isoquinolinium derivatives as corrosion inhibitors of mild steel in 0.5 M H2SO4 solution
| Autor: | Chibani Aissa, Mezhoud Bilel, Bouraiou Abdelmalek, Said Mohamed Elhadi |
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| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Chemistry 020209 energy Organic Chemistry Iodide Inorganic chemistry technology industry and agriculture Metals and Alloys Langmuir adsorption model Potentiodynamic polarization Sulfuric acid 02 engineering and technology 021001 nanoscience & nanotechnology Surfaces Coatings and Films Corrosion Dielectric spectroscopy symbols.namesake chemistry.chemical_compound Adsorption 0202 electrical engineering electronic engineering information engineering Materials Chemistry symbols 0210 nano-technology Polarization (electrochemistry) |
| Zdroj: | Protection of Metals and Physical Chemistry of Surfaces. 52:731-736 |
| ISSN: | 2070-206X 2070-2051 |
| DOI: | 10.1134/s2070205116040092 |
| Popis: | The 1-methylquinolinium iodide (I) Qui+, I– and 2-methylisoquinolinium iodide isoQui+, I– were investigated as a corrosion inhibitors for mild steel in sulfuric acid using electrochemical impedance spectroscopy and potentiodynamic polarization techniques. The results indicated that the corrosion inhibition efficiency and extent of surface coverage were increased with increase in inhibitors concentrations. Polarization curves revealed that both inhibitors acted as a mixed-type inhibitor. The thermodynamic parameters were evaluated for corrosion inhibition process. The adsorption of both inhibitors on mild steel surface obeyed Langmuir adsorption isotherm. |
| Databáze: | OpenAIRE |
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