Electrochemical Corrosion Tests in Low-Conductivity Ethanol-Gasoline Blends: Application of Supporting Electrolyte for Contaminated E5 and E10 Fuels

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F21%3A43921937" target="_blank" >RIV/60461373:22320/21:43921937 - isvavai.cz</a>

Result on the web

<a href="https://pubs.acs.org/doi/abs/10.1021/acsomega.1c02320" target="_blank" >https://pubs.acs.org/doi/abs/10.1021/acsomega.1c02320</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsomega.1c02320" target="_blank" >10.1021/acsomega.1c02320</a>

Result language

angličtina

Original language name

Electrochemical Corrosion Tests in Low-Conductivity Ethanol-Gasoline Blends: Application of Supporting Electrolyte for Contaminated E5 and E10 Fuels

Original language description

Ethanol-based E5 and E10 fuels have extensively been used as automotive fuels in gasoline engines. However, especially when contaminated, these fuels can exhibit corrosion effects on some engine construction parts such as mild steel. Thus, the study of mild steel corrosion resistance has become of the utmost importance. Electrochemical methods such as electrochemical impedance spectroscopy (EIS) and polarization characteristics measurements (Tafel scan – TS) were proven to be very valuable in studying the mild steel corrosion behavior in ethanol-gasoline blends (EGBs). However, the use of these methods was, so far, very limited for low-ethanol-content EGBs such as E5 and E10 due to their low conductivity. In this study, we present modified EIS and TS corrosion measurements based on the use of tetrabutylammonium tetrafluoroborate (TBATFB) at 500 mg/L as a supporting electrolyte. This modification led to an increase in the contaminated E5 and E10 fuels&apos; conductivity, which allowed us to successfully perform the electrochemical corrosion tests. The corrosion current densities were determined to be 1.5×10-3 and 2.5×10-2 uA/cm2 for the tested E5 and E10 fuels, respectively. These modified methods present a significant extension of an electrochemical testing apparatus for steel corrosion studies in EGBs. They can allow one to obtain instantaneous information about the occurring corrosion process and, thus, estimate the materials&apos; lifetime in corrosive environments and potentially help to prevent corrosion.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20704 - Energy and fuels

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

ACS Omega

ISSN

2470-1343

e-ISSN

—

Volume of the periodical

6

Issue of the periodical within the volume

27

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

17698-17708

UT code for WoS article

000674270200055

EID of the result in the Scopus database

2-s2.0-85110983829