Understanding Shale Oil Hydrotreatment with Composition Analysis Using Positive-Ion Mode Atmospheric Pressure Photoionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry

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• 作者：Kui Zhang ; Jian Yu ; Shiqiu Gao ; Changming Li ; Guangwen Xu
• 刊名：Energy & Fuels
• 出版年：2017
• 出版时间：February 16, 2017
• 年：2017
• 卷：31
• 期：2
• 页码：1362-1369
• 全文大小：559K
• ISSN：1520-5029

文摘

Positive-ion mode of atmospheric pressure photoionization (APPI) coupled with a 9.4 T Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer has been applied to the characterization of shale oil from pyrolysis and its hydrotreatment. The hydrotreated shale oil was obtained through reactions over catalysts Ni–Mo, Ni–W, or Co–Mo. It was found that N₁ and N₁O₁ species are the dominant N compounds and S₁ species is the dominant S compound in shale oil from pyrolyzing Huadian oil shale. The primary aromatic hydrocarbons (AHCs) are mono- and double-ring aromatics. After hydrotreatment, both S and N compounds are effectively removed and the catalyst Ni–Mo shows the best performance in hydrodesulfurization (HDS) and hydrodenitrogenation (HDN). The AHC species, especially the mono-ring aromatics, increases as a result of the transformation of N₁, N₁O₁, and S₁ species into AHC species through hydrotreatment. Indole, carbazole, acridine, and their derivatives are preserved as N₁ species. The reactions of HDN for shale oil were further analyzed by considering the transformation between N₁O₁ and N₁ species.