High-temperature two-dimensional gas chromatography of hydrocarbons up to nC60 for analysis of vacuum gas oils.
J Chromatogr A
; 1216(14): 2905-12, 2009 Apr 03.
Article
in En
| MEDLINE
| ID: mdl-19110253
ABSTRACT
In a tense energetic context, the characterization of heavy petroleum fractions becomes essential. Conventional comprehensive two-dimensional gas chromatography (2D-GC or GCxGC) is widely used for middle distillates analysis, but only a few applications are devoted to these heavier fractions. In this paper, it is shown how the optimization of GCxGC separation allowed the determination of suitable high-temperature (HT) conditions, adjusting column properties and operating conditions. 2D separations were evaluated using 2D separation criteria and a new concept of 2D asymmetry (As(2D)). New HT conditions allowed the extension of GCxGC range of applications to heavier hydrocarbons, up to nC(60). A first application of high-temperature two-dimensional gas chromatography (HT-2D-GC) to a full vacuum gas oil (VGO) feed stock is described. Comparisons with other standardized methods illustrate the high potential of HT-2D-GC for heavy fractions analysis.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Petroleum
/
Chromatography, Gas
/
Hydrocarbons
Language:
En
Journal:
J Chromatogr A
Year:
2009
Document type:
Article
Affiliation country:
France