Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1056, Issue 1-2, Pages 155-162Publisher
ELSEVIER
DOI: 10.1016/j.chroma.2004.05.071
Keywords
gas chromatography; comprehensive two-dimensional; petrochemical samples; hydrocarbons
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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 (ID-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. (C) 2004 Published by Elsevier B.V.
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