Kratko priopćenje

https://doi.org/10.5562/cca1874

The Use of 13C NMR Spectroscopy and Comprehensive Two-dimensional Gas Chromatography, GC×GC, for Identification of Compounds Involved in Diesel Fuel Oxidative Behavior

Jelena Parlov Vuković orcid.org/0000-0002-8464-5599 ; INA-Industrija nafte d.d., Refining & Marketing Business Division, Product Development Department, Lovinčićeva bb, HR-10002 Zagreb, Croatia
Sanda Telen ; INA-Industrija nafte d.d., Refining & Marketing Business Division, Product Development Department, Lovinčićeva bb, HR-10002 Zagreb, Croatia
Vlasta Srića ; INA-Industrija nafte d.d., Refining & Marketing Business Division, Product Development Department, Lovinčićeva bb, HR-10002 Zagreb, Croatia
Predrag Novak ; Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000 Zagreb, Croatia

Sažetak

An approach has been proposed combining one dimensional inverse gated 13C NMR spectroscopy
and a comprehensive two dimensional gas chromatography (GC×GC) to analyze diesel fuels prior and
after oxidation under the standard conditions. Classes of hydrocarbons present before and after oxidation
have been identified and quantified. A decrease in aromatic iso- and n-paraffinic hydrocarbons and an increase
in the total saturated hydrocarbons have been observed after oxidation. In that respect NMR spectroscopy
has potential to be used as standard method for determination of oxidation stability. Furthermore,
GC×GC has been applied to identify compounds involved in the formation of sediments during oxidation.
Obtained results have shown that hydrocarbon composition, especially the normal paraffin content play a
role in the formation of sediments in these distillate fuels. This is important since sediments may influence
the quality of diesel fuels. (doi: 10.5562/cca1874)

Ključne riječi

diesel fuel; 13C NMR; GC×GC; oxidation stability; sediments; normal paraffins

Hrčak ID:

75115

URI

https://hrcak.srce.hr/75115

Datum izdavanja:

20.12.2011.

Posjeta: 3.307 *