Comparison of conventional gas chromatography (1D-GC) and comprehensive two- dimensional gas chromatography (GCxGC) for the detailed analysis of petrochemical samples

Colombe Vendeuvre (1) , Fabrice Bertoncini (1) , Laurent Duval (1) , Jean-Luc Duplan (1) , Didier Thiébaut (2) , Marie-Claire Hennion (2)

1 IFPEN - IFP Energies nouvelles
2 Laboratoire Environnement et Chimie Analytique

Comprehensive two-dimensional gas chromatography (GCxGC) has been investigated for the characterization of high valuable petrochemical samples from dehydrogenation of n-paraffins, Fischer-Tropsch and oligomerization processes. GCxGC 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 GCxGC 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.

Mots clés: Hydrocarbons; Gas chromatography; comprehensive two-dimensional; Petrochemical samples

Domaines: Traitement du signal et de l'image [eess.SP]; Chimie analytique

Colombe Vendeuvre, Fabrice Bertoncini, Laurent Duval, Jean-Luc Duplan, Didier Thiébaut, et al.. Comparison of conventional gas chromatography (1D-GC) and comprehensive two- dimensional gas chromatography (GCxGC) for the detailed analysis of petrochemical samples. Journal of Chromatography A, 2004, 1056, pp.155-162. ⟨10.1016/j.chroma.2004.05.071⟩. ⟨hal-01330592⟩