Influence of antioxidants in biodiesel degradation: Electronic paramagnetic resonance tracking of free radicals

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F21%3APU139464" target="_blank" >RIV/00216305:26620/21:PU139464 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0016236120325278?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0016236120325278?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.fuel.2020.119531" target="_blank" >10.1016/j.fuel.2020.119531</a>

Result language

angličtina

Original language name

Influence of antioxidants in biodiesel degradation: Electronic paramagnetic resonance tracking of free radicals

Original language description

Biodiesel is considered a renewable fuel that has been replacing diesel. However, its degradation, caused by a radical reaction, is one of the biggest concerns about this fuel. Spin trapping is a useful resource to evaluate the radical formation in a sample. In the present work, the biodiesel degradation from canola, corn and soybean oils, with synthetic antioxidants (BHA -butylated hydroxyanisole; BHT- butylated hydroxytoluene; TBHQ- tert-butylhydroquinone) and extracts (rosemary; oregano; basil), were measured by Electron Paramagnetic Resonance (EPR). The measurements were performed at room temperature, applying the spin trapping technique, using the alpha-phenyl-N-tert-butylnitrone (PBN) as the spin trap. The analyzed data allowed evaluating the degradation of the samples and their stability. Besides, the presence of the hydroxyl radical in all samples in the degradation process was identified. The biodiesel from soybean oil presented the greatest stability compared to the others, with all antioxidants tested. The oregano extract proved to be the most efficient natural antioxidant in the canola and soybean biodiesel, with more than 300 days of free radical detection, while the rosemary extract was more efficient in the corn biodiesel, achieving free radical signals until the 209th day of analysis.

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

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project

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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

FUEL

ISSN

0016-2361

e-ISSN

1873-7153

Volume of the periodical

287

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

„119531-1“-„119531-8“

UT code for WoS article

000604277500010

EID of the result in the Scopus database

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