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

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

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

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

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

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

Abstract

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

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