Untreated shale oil, shale oil treated with HCl aqueous solution and shale oil treated with HCl and furfural were used to do comparative experiments in fixed bed reactors. Nitrogen compounds and condensed aromatics extracted by HCl and furfural were characterized by electrospray ionization Fourier transform cyclotron resonance mass spectrometry and gas chromatography and mass spectrometry, respectively. Compared with untreated shale oil, the conversion and yield of liquid products increased considerably after removing basic nitrogen compounds by HCl extraction. Furthermore, after removing nitrogen compounds and condensed aromatics by both HCl and furfural, the conversion and yield of liquid products further increased. In addition, N₁ class species are predominant in both basic and non-basic nitrogen compounds, and they are probably indole, carbazole, cycloalkyl-carbazole, pyridine and cycloalkyl-pyridine. As for the condensed aromatics, most of them possess aromatic rings with two to three rings and zero to four carbon atom.

中文翻译：

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含氮化合物和稠合芳烃对页岩油催化裂化的阻滞作用及其表征。

在固定床反应器中，使用未处理的页岩油，用HCl水溶液处理过的页岩油以及用HCl和糠醛处理过的页岩油进行对比实验。分别通过电喷雾电离傅立叶变换回旋共振质谱，气相色谱和质谱对通过HCl和糠醛萃取的氮化合物和缩合芳烃进行了表征。与未处理的页岩油相比，用HCl萃取除去碱性氮化合物后，液体产品的转化率和产率显着提高。此外，在通过HCl和糠醛除去氮化合物和缩合的芳族化合物之后，液体产物的转化率和产率进一步提高。另外，N ₁在碱性和非碱性氮化合物中，三类物质均占主导地位，它们可能是吲哚，咔唑，环烷基咔唑，吡啶和环烷基吡啶。至于稠合的芳族化合物，它们大多数具有带有2-3个环和0-4个碳原子的芳族环。