页岩油的色谱-质谱分析

Class Separation and Characterization of Shale Oil by Thin-Layer Chromatography and Capillary Gas Chromatography-Mass Spectrometry

在石油资源日趋紧张的形势下,页岩油——一种储量可观的能源资源受到人们的关注。页岩油的组成比石油复杂得多。直接作燃料用的经济价值较低。为有效开发综合利用页岩油,首先需搞清它的组成与含量。分析页岩油是件很复杂的工作。

A class separation technique for shale oil based on thin-layer chromatography (TLC) has been developed using 10-40 μm silica coated plates. Hexane, toluene-acetone and acetone were sequentially used as the solvents to obtain the following fractions; alkane/alkenes, aromatics, oxygen and nitrogen containing compounds. The alkane/alkene fraction was further separated using a semi-preparative silica gel column coated with silver nitrate. Gas chromatography - mass spectrometry (GC-MS ) and GC were used for individual compound identification and quantitation. Four hundred compounds, including alkanes, alkenes, aromatic hydrocarbons, oxygen and nitrogen containing compounds, were measured in the shale oil.