Citation: LI Jiwen, JIANG Liyan, LIU Junyan, WANG Chuan. Separation of C₅-C₇ hydrocarbon components on Al₂O₃ capillary column and its application[J]. Chinese Journal of Chromatography, ;2015, 33(9): 1009-1014. doi: 10.3724/SP.J.1123.2015.03027 shu

Separation of C₅-C₇ hydrocarbon components on Al₂O₃ capillary column and its application

1.
Sinopec Shanghai Research Institute of Petrochemical Technology, Shanghai 201208, China

Corresponding author: LI Jiwen,
Received Date: 23 March 2015

The separation and qualitative analysis of 54 common C₅-C₇ hydrocarbon components on three Al₂O₃ capillary columns, including S type, KCl type and M type, were investigated in detail. The results showed that the separation of the 54 C₅-C₇ hydrocarbon components were partly different on these three Al₂O₃ capillary columns, and the most of C₅-C₇ hydrocarbon components could be well separated, except that some of them couldn't achieve a baseline separation or co-eluted. Linear temperature programmed retention indices of the 54 C₅-C₇ hydrocarbon components, including 15 C₅ hydrocarbons, 25 C₆ hydrocarbons and 14 C₇ hydrocarbons, were determined on these three Al₂O₃ capillary columns. The determination of linear temperature programmed retention indices for these C₅-C₇ hydrocarbon components on Al₂O₃ capillary columns provided a basis for the qualitative analysis of them. At the same time, a real pyrolysis gas sample from one of the petrochemical plants was qualitatively analyzed according to the linear temperature programmed retention indices, and the contents of C₅-C₇ hydrocarbon components were determined. The application field of Al₂O₃ capillary column was expanded and it is helpful for the analysis of light hydrocarbons in petrochemical enterprises.
- gas chromatography (GC),
- Al₂O₃ capillary chromatographic column,
- C₅-C₇ hydrocarbon components,
- pyrolysis gas
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沈阳化工大学材料科学与工程学院沈阳 110142

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Separation of C₅-C₇ hydrocarbon components on Al₂O₃ capillary column and its application