Extended characterization of a vacuum gas oil by offline LC-high-temperature comprehensive two-dimensional gas chromatography

In a context of environmental preservation, purification and conversion of heavy petroleum cuts into high-quality fuel becomes essential. The interest for the characterization of those very complex matrices becomes a trendy analytical challenge, when it comes to get molecular information for the opt...

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Bibliographic Details
Published in:Journal of separation science 2010-06, Vol.33 (12), p.1787-1796
Main Authors: Dutriez, Thomas, Courtiade, Marion, Thiébaut, Didier, Dulot, Hugues, Bertoncini, Fabrice, Hennion, Marie-Claire
Format: Article
Language:English
Subjects:
Analytical chemistry
Applied sciences
Biomarkers
Carbon
Chemistry
Chromatographic methods and physical methods associated with chromatography
Conversion
Crude oil, natural gas and petroleum products
Energy
Exact sciences and technology
Fuels
Gas chromatographic methods
Heavy fractions
Heavy petroleum
High-temperature 2-D GC
Hydrocarbon analysis
LC-GC×GC
Mathematical analysis
Matrices
Matrix methods
Other chromatographic methods
Prospecting and production of crude oil, natural gas, oil shales and tar sands
Quantitative analysis
Separation
TOF/MS
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Summary:In a context of environmental preservation, purification and conversion of heavy petroleum cuts into high-quality fuel becomes essential. The interest for the characterization of those very complex matrices becomes a trendy analytical challenge, when it comes to get molecular information for the optimization of industrial processes. Among new analytical techniques, high-temperature 2-D GC has recently proved its applicability to heavy petroleum matrices, but lacks in selectivity to separate all chemical groups. To gain resolution, heart cutting is demonstrated for LC separation of saturated, aromatic and polar compounds prior to high-temperature 2-D GC. Therefore, an extended global resolution was obtained, especially by a better distinction of saturated compounds. This includes iso-paraffins and biomarker polynaphthenic structures, which are impossible to quantify with MS methods. This new way to analyze heavy petroleum fractions gives innovative opportunities for the construction of global weight distributions by carbon atoms number and by chemical families. This can right now be employed for quantitative analysis of heavy petroleum fractions and for studying conversion processes.
ISSN:1615-9306
1615-9314
DOI:10.1002/jssc.201000102