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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

FUEL

ISSN

0016-2361

e-ISSN

1873-7153

Svazek periodika

287

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

„119531-1“-„119531-8“

Kód UT WoS článku

000604277500010

EID výsledku v databázi Scopus

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