Oxidation Kinetics of Neat Methyl Oleate and as a Blend with Solketal
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In: Energies, Vol. 16, No. 7, 3253, 05.04.2023.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Oxidation Kinetics of Neat Methyl Oleate and as a Blend with Solketal
AU - Türck, Julian
AU - Schmitt, Fabian
AU - Anthofer, Lukas
AU - Lichtinger, Anne
AU - Türck, Ralf
AU - Ruck, Wolfgang
AU - Krahl, Jürgen
N1 - Publisher Copyright: © 2023 by the authors.
PY - 2023/4/5
Y1 - 2023/4/5
N2 - The complexity of biodiesel aging has shown that the mechanism needs further research. The rate of aging product formation and associated interactions can help improve fuel quality. Since biodiesel is a multicomponent system and constant changes occur in the chemical environment, which interactions yield which products must be shown in more detail. Particularly under observation was the correlation between peroxides and epoxides. In addition, it is critical that the influence and interactions of new drop-in fuel candidates be investigated. In this work, the kinetics of the formation of aging products of methyl oleate (C18:1) are studied. The aim was to reduce the complexity in order to be able to make more precise and detailed statements about the mechanism. Ketones, acids, peroxide, and epoxide values were recorded. A distinction is made between pure methyl oleate and mixtures with 3 wt% isopropylidene glycerine (solketal). After solketal decomposed in the blends, the aging process showed changes. The influence of solketal resulted in a higher number of acids and epoxides over time. It implied that peroxides are not necessarily the precursor of epoxides. In summary, correlation and solketal’s influence showed that a sequence of aging products could be detected.
AB - The complexity of biodiesel aging has shown that the mechanism needs further research. The rate of aging product formation and associated interactions can help improve fuel quality. Since biodiesel is a multicomponent system and constant changes occur in the chemical environment, which interactions yield which products must be shown in more detail. Particularly under observation was the correlation between peroxides and epoxides. In addition, it is critical that the influence and interactions of new drop-in fuel candidates be investigated. In this work, the kinetics of the formation of aging products of methyl oleate (C18:1) are studied. The aim was to reduce the complexity in order to be able to make more precise and detailed statements about the mechanism. Ketones, acids, peroxide, and epoxide values were recorded. A distinction is made between pure methyl oleate and mixtures with 3 wt% isopropylidene glycerine (solketal). After solketal decomposed in the blends, the aging process showed changes. The influence of solketal resulted in a higher number of acids and epoxides over time. It implied that peroxides are not necessarily the precursor of epoxides. In summary, correlation and solketal’s influence showed that a sequence of aging products could be detected.
KW - alcohol influence
KW - biodiesel aging
KW - methyl oleate
KW - oxidation kinetics
KW - sequence of aging products
KW - solketal
KW - Chemistry
KW - Energy research
UR - http://www.scopus.com/inward/record.url?scp=85152517159&partnerID=8YFLogxK
U2 - 10.3390/en16073253
DO - 10.3390/en16073253
M3 - Journal articles
AN - SCOPUS:85152517159
VL - 16
JO - Energies
JF - Energies
SN - 1996-1073
IS - 7
M1 - 3253
ER -