Fresenius' Zeitschrift für analytische Chemie

, Volume 324, Issue 8, pp 781–785 | Cite as

Application of NMR to fossil fuels: an assessment of recent advances

  • Colin E. Snape


Recent applications of high resolution solution- and solid-state NMR techniques to fossil fuels and their derivatives are assessed with emphasis on the quantification of aromatic, aliphatic and heteroatomic groups. 13C NMR spectral editing methods that generate C, CH, CH2 and CH3 sub-spectra for soluble materials are reasonably quantitative. Two-dimensional methods aid peak assignments in 1H and 13C NMR analysis of distillates. There are few reports on the investigation of heteroatom environments by 17O, 14N, 15N and 33S NMR, but derivatisation with groups containing a convenient magnetic label (1H, 13C, 19F and 29Si) has proved successful for estimating acidic OH, NH and SH concentrations in coal-derived liquids and petroleum residues. Solid-state 13C NMR analysis of coals and related materials is often only semi-quantitative because not all the carbon is observed using cross-polarisation.


Resolution Solution Petroleum Residue Magnetic Label Editing Method Spectral Editing 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Anwendung der NMR auf fossile Brennstoffe: Bewertung neuerer Fortschritte


Neuere Anwendungen von hochauflösenden Lösungs- und Festkörper-NMR-Techniken auf fossile Brennstoffe und ihre Derivate werden vorgestellt mit der Betonung auf Quantifizierung der aromatischen, aliphatischen und heteroaromatischen Gruppen. Methoden der Editierung von 13C-NMR-Spektren, die separate Spektren für C, CH, CH2 und CH3-Gruppen liefern, sind bei löslichen Materialien ausreichend quantitativ. Zweidimensionale Methoden helfen bei der Signalzuordnung der 1H- und 13C-NMR-Spektren von Destillaten. Zwar liegen einige Berichte über Untersuchungen von Heteroatomumgebungen mit 17O-, 14N-, 15N- und 33S-NMR vor, doch hat sich die Derivatisierung mit Gruppen, die einen empfindlicheren Kern als Meßsonde besitzen (1H, 13C, 10F, 29Si), als erfolgreich zur Abschätzung der Konzentration acider OH-, NH- und SH-Gruppen in aus Kohle entstandenen Flüssigkeiten und in Erdölrückständen erwiesen. Die Analyse von Kohle und ähnlichen Materialien mit Hilfe der Festkörper-13C-NMR-Spektroskopie ist oft nur halbquantitativ, da nicht alle Kohlenstoffatome mit der Cross-Polarisations-Technik beobachtet werden.


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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • Colin E. Snape
    • 1
  1. 1.National Coal BoardCoal Research EstablishmentCheltenhamUK

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