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Pospíšil, Milan
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Publications (6/6 displayed)
- 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
- 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
Methods for Testing the Steel Corrosion Inhibition in Alcohol−Gasoline Blends Using Diethylenetriamine
Abstract
Alcohol−gasoline blends (AGBs) are fuels with higher corrosion aggressiveness than conventional petroleum-based fuels containing only hydrocarbons. Thus, the further use of AGBs is associated with finding away to reduce these corrosion effects. The reduction of material corrosion can be achieved using corrosion inhibitors. In this work, we investigated the inhibitory effects of diethylenetriamine (DETA) in contaminated alcohol−gasoline fuel containing 85 vol % of butanol (B85). E85 fuel containing 85 vol % of ethanol was used for comparison as an alternative fuel. These fuels were purposely contaminated with water and trace amounts of chloride andsulfate ions, as well as acetic and sulfuric acids. The testing was performed on mild steel as this kind of steel has been used as the most common construction material for fuel transportation and storage. Corrosion tests were performed using (i) electrochemical impedance spectroscopy in two- and three-electrode arrangements, (ii) polarization curve measurements, (iii) cyclic potentiodynamic polarization, and (iv) static immersion tests. The DETA inhibitor efficiency in the most aggressive fuel was found to be 99%. With the use of the DETA inhibitor, a reduction in the corrosion current density was achieved from the initial value of 1.6 to 1.0 × 10−2 μA·cm−2..