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| Naji, M. |
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| Motta, Antonella |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Petrov, R. H. | Madrid |
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| Rančić, M. |
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| Azevedo, Nuno Monteiro |
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Staš, Martin
University of Chemistry and Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2024Amines as Steel Corrosion Inhibitors in Ethanol-Gasoline Blendscitations
- 2024The Use of Amines as Steel Corrosion Inhibitors in Butanol-Gasoline Blendscitations
- 2022Methods for Testing the Steel Corrosion Inhibition in Alcohol−Gasoline Blends Using Diethylenetriaminecitations
- 2022Corrosion Aggressiveness of Ethanol-Gasoline and Butanol-Gasoline Blends on Steel: Application of Electrochemical Impedance Spectroscopycitations
- 2021Electrochemical Corrosion Tests in an Environment of Low-Conductive Ethanol-Gasoline Blends: Part 1 – Testing of Supporting Electrolytescitations
- 2021Electrochemical Study of Mild Steel Resistance in Butanol-Gasoline and Ethanol-Gasoline Blendscitations
- 2021Electrochemical Corrosion Tests in Low-Conductivity Ethanol-Gasoline Blends: Application of Supporting Electrolyte for Contaminated E5 and E10 Fuelscitations
- 2019Cyclic Potentiometric Polarization and Resistance of Mild Steel in an Environment of Alcohols and their Blends with Gasolinecitations
- 2018Study of Corrosion Effects of Oxidized Ethanol-Gasoline Blends on Metallic Materialscitations
- 2017Study of Corrosion of Metallic Materials in Ethanol-Gasoline Blends: Application of Electrochemical Methodscitations
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article
The Use of Amines as Steel Corrosion Inhibitors in Butanol-Gasoline Blends
Abstract
Butanol is an interesting component used for blending gasoline fuels. However, the polar nature of butanol allows the solubility of water and ionic compounds in butanol-gasoline blends (BGBs) making them aggressive to mild steel. Amines, such as ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentaamine, morpholine, piperazine, and hexamethylenediamine, were tested as corrosion inhibitors for mild steel in BGBs. Additionally, the influence of the acetic acid and sodium chloride concentrations on the inhibition efficiency was examined. Electrochemical impedance spectroscopy and potentiodynamic polarization were employed for the measurements, complemented by static immersion testing and an XPS surface analysis. The highest inhibition efficiency was demonstrated for diethylenetriamine, triethylenetetramine, and hexamethylenediamine, achieving a value of 95 % or more at a concentration of 100 mg/L. The formation of ionic pairs involving protonated amines and chlorides was also confirmed. The XPS analysis revealed a very thin passive layer of iron oxides, which may form in the presence of amines, protecting mild steel in BGBs.