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Hydrotreating Behavior of Ni-Mo/SiO2-Al2O3 for the Upgrading of Heavy Oil From Coal Liquefaction

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Ni-Mo/SiO2-Al2O3 with different Si/Al molar ratios were synthesized, characterized, and evaluated for upgrading of heavy oil derived from the direct coal liquefaction process. The results indicated that the Si/Al ratio has a significant influence on the dispersion of MoS2 and the hydrodenitrogenation activity. The larger Si/Al ratio causes the Ni-Mo/SiO2-Al2O3 to form the larger MoS2 crystallite. In the upgrading of coal-derived heavy oil, the hydrodenitrogenation and hydrodearomatization activities of Ni-Mo/SiO2-Al2O3 (Si/Al: 5) reached 53 and 60%, respectively, which are significantly higher than that of Ni-Mo/Al2O3.
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Keywords: direct coal liquefaction; heavy oil; hydrodearomatization; hydrodenitrogenation

Document Type: Research Article

Affiliations: School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Coal Clean Conversion and Utilization, Anhui University of Technology, Maanshan, P.R. China

Publication date: June 8, 2012

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