Comparison of conventional gas chromatography and comprehensive two-dimensional gas chromatography for the detailed analysis of petrochemical samples.
Comprehensive two-dimensional gas chromatography (GC x GC) has been investigated for the characterization of high valuable petrochemical samples from dehydrogenation of n-paraffins, Fischer-Tropsch and oligomerization processes. GC x GC separations, performed using a dual-jets CO2 modulator, were optimized using a test mixture representative of the hydrocarbons found in petrochemicals. For complex samples, a comparison of GC x GC qualitative and quantitative results with conventional gas chromatography (1D-GC) has demonstrated an improved resolution power of major importance for the processes: the group type separation has permitted the detection of aromatic compounds in the products from dehydrogenation of n-paraffins and from oligomerization, and the separation of alcohols from other hydrocarbons in Fischer-Tropsch products.
Vendeuvre
Colombe
C
Institut Français du Pétrole, IFP-Lyon, BP3, 69390 Vernaison, France.
Bertoncini
Fabrice
F
Duval
Laurent
L
Duplan
Jean-Luc
JL
Thiébaut
Didier
D
Hennion
Marie-Claire
MC
D002849:Chromatography, Gas / Q000379:methods*; D010578:Petroleum / Q000032:analysis*
D010578:Petroleum