Hydrotreatment of Heavy Oil from Direct Coal Liquefaction on a Sulfided Ni-W/AC Catalyst
Ni-W catalysts supported on activated carbon and Al2O3 were prepared by an incipient wetness impregnation method and characterized by x-ray diffraction and temperature programmed reduction. Heavy oil (distillation temperature: 320–340°C) derived from the direct coal liquefaction process using Shengli coal were hydrotreated using sulfided Ni-W catalysts at 400°C and 5.0 MPa initial H2 pressure. The results showed that the support had a significant influence on the reducibility of metal oxides, hydrodenitrogenation, and hydrodearomatization activities of coal-derived heavy oil. Ni-W/activated carbon exhibited higher decolor performance and hydrodearomatization activities for upgrading the coal-derived heavy oil than the Ni-W/Al2O3 catalyst.
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Document Type: Research Article
Affiliations: School of Chemistry & Chemical Engineering, Anhui Key Laboratory of Coal Clean Conversion & Utilization,Anhui University of Technology, Ma'anshan,Anhui, China
Publication date: December 15, 2012