High-temperature two-dimensional gas chromatography of hydrocarbons up to n

详细信息    查看全文

• 作者：Thomas Dutriez ; Marion Courtiade ; Didier Thié ; baut ; Hugues Dulot ; Fabrice Bertoncini ; Jé ; rô ; me Vial ; Marie-Claire Hennion
• 关键词：High temperature ; Comprehensive two-dimensional ; Gas chromatography ; GC × ; GC ; 2D asymmetry ; Enhanced elution ; Hydrocarbons ; Vacuum gas oils ; Petroleum
• 刊名：Journal of Chromatography A
• 出版年：2009
• 出版时间：3 April 2009
• 年：2009
• 卷：1216
• 期：14
• 页码：2905-2912
• 全文大小：737 K

文摘

In a tense energetic context, the characterization of heavy petroleum fractions becomes essential. Conventional comprehensive two-dimensional gas chromatography (2D-GC or GC × GC) 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 GC × GC 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 GC × GC range of applications to heavier hydrocarbons, up to nC₆₀. 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.