NMR Investigations on the Aging of Motor Oils

NMR Investigations on the Aging of Motor Oils

Aging of motor oil is characterized by diverse NMR methods to get insight into the chemical processes which occur during aging. Already one-dimensional 1H and 13C spectra reveal the relevance of chemical aging also with respect to the mechanical behavior of oils. As NMR is a quantitative analytical...

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Veröffentlicht in:Energy & fuels 2015-11, Vol.29 (11), p.7204-7212
Hauptverfasser: Förster, E, Becker, J, Dalitz, F, Görling, B, Luy, B, Nirschl, H, Guthausen, G
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container_end_page 7212
container_issue 11
container_start_page 7204
container_title Energy & fuels
container_volume 29
creator Förster, E
Becker, J
Dalitz, F
Görling, B
Luy, B
Nirschl, H
Guthausen, G
description Aging of motor oil is characterized by diverse NMR methods to get insight into the chemical processes which occur during aging. Already one-dimensional 1H and 13C spectra reveal the relevance of chemical aging also with respect to the mechanical behavior of oils. As NMR is a quantitative analytical method, the absolute chemical changes can be observed and quantified. In addition, the spectral interpretation in terms of chemical composition is confirmed and deepened by two-dimensional 1H–1H, 1H–13C, and 1H–15N correlation spectra, as well as diffusion and relaxation experiments. The different NMR results are discussed and interpreted to obtain a thorough picture about aging processes of motor oils.
doi_str_mv 10.1021/acs.energyfuels.5b02164
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title NMR Investigations on the Aging of Motor Oils
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