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通过对催化裂化轻柴油中的芳烃进行 SiO_2/Al_2O_3双吸附法预分离为五个馏份:饱和烃(Sat)、单环芳烃(Fr 1)、双环芳烃(Fr 2)、多环芳烃(Fr 3)和极性物馏份。然后由色谱—质谱联用法(GC-MS)对其中的饱和烃及单环芳烃进行组成分析。借助于质量色谱法(MC),使缺少标准图谱及文献参考数据的复杂化合物系列得到迅速、准确的鉴定,结果为:饱和烃馏份由 C_(16)—C_(24)的烷烃组成;单环芳烃馏份由 C_8—C_(15)的烷基苯组成。
Through the double-adsorption of SiO_2 / Al_2O_3 on aromatic hydrocarbons in FCC diesel, five fractions were pretreated: Sat, Mono (Fr 1), Bicyclic Aromatic Hydrocarbons (Fr 2), Polycyclic Aromatic Hydrocarbons 3) and polar fractions. The composition of saturated and monocyclic aromatic hydrocarbons was analyzed by GC-MS. With the help of mass spectrometry (MC), the series of complex compounds lacking the standard spectra and literature reference data were rapidly and accurately identified. The results showed that the saturated hydrocarbon fraction consisted of C_ (16) -C_ (24) alkanes. The single The aromatic hydrocarbon fraction consists of C_8-C_ (15) alkylbenzenes.