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Flash Pyrolysis Coupled to GCxGC-TOFMS and GC-High Resolution TOFMS for Characterization of Crude Oil and Petroleum Fractions
EP22983
Poster Title: Flash Pyrolysis Coupled to GCxGC-TOFMS and GC-High Resolution TOFMS for Characterization of Crude Oil and Petroleum Fractions
Submitted on 13 May 2015
Author(s): Clecio F. Klitzke, Joe Binkley, Jeffrey Patrick
Affiliations: LECO Corporation
This poster was presented at ALAGO 2014
Poster Views: 1,507
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Poster Information
Abstract: As the world’s remaining deposits of petroleum become heavier it's important to understand the chemical nature of heavy crude oil and its fractions. The analysis of high boiling point constituents of crude oils adds a new dimension for the complete characterization of crude oil. In this study we evaluated the use of a pyrolysis probe (Py) coupled to comprehensive two-dimensional gas chromatography (GC×GC) time-of-flight (TOF) and GC high resolution time-of-flight (HRTOF) mass spectrometry (MS) for the characterization of crude oils and asphaltene fractions.Summary: The pyrolysis of asphaltenes from discrete crude oil samples shows distinct composition in terms of light and heavy aromatic hydrocarbons and alkyldibenzo-thiophenes. The use of Py–GC×GC–TOFMS is crucial for the determination of isomeric composition, and Py–GC–HRTOFMS with high resolution and high mass accuracy complements the identification by unequivocal chemical formula assignments. The study of the relationships of the crude oil and asphaltene composition are in progress.References: Chiaberge, S.; Fiorani, T.; Cesti, P., 2011. Methyldibenzothiophene isomer ratio in crude oils: gas chromatography tandem mass spectrometry analysis. Fuel Processing Technology. 92, 2196-2201.

Sarmah, M.K.; Borthakur, A.; Dutta, A., 2010. Pyrolysis of petroleum asphaltenes from different geological origins and use of methylnaphthalenes and methyl-phenanthrenes as maturity indicators for asphaltenes. Bulletin of Materials Science 33, 509-515.
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