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- W89061121 abstract "This chapter explores the characteristics and catalytic behavior of new Ni–W catalysts developed for upgrading coal-derived liquids. A new generation of highly active catalyst that enables to reduce aromatics and hetrocompounds is required for practical utilization of coal-derived liquids. Production of gasoline from middle and heavy distillates seems to be the most suitable utilization of coal derived liquids because of their unconventional properties for kerosene or light oil. Hydrocracking reaction on zeolite catalyst was found to proceed after hydrogenation of aromatic rings. Acid sites of zeolite catalysts were easily poisoned by nitrogen containing compounds. Hydrodenitrogenation and hydrogenation of the aromatic rings are necessary before catalytic hydrocracking. The chapter presents an investigation of catalysts for a two-stage upgrading process consisting of hydrogenation and hydrocracking of coal-derived liquids. Based on the understanding of fundamental research, two types of Ni–W catalysts each possessing high hydrogenation and hydrocracking activity were designed and prepared for the first- and second-stage upgrading, respectively. The two kinds of catalysts were then applied to the two-stage upgrading. The two types of the catalysts used in the two stage process showed a great improvement in overall activity and initial deactivation as compared to commercially available catalysts." @default.
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- W89061121 date "1991-01-01" @default.
- W89061121 modified "2023-09-24" @default.
- W89061121 title "SOME CHARACTERISTICS AND CATALYTIC BEHAVIOR OF NEW Ni-W CATALYSTS DEVELOPED FOR UPGRADING COAL-DERIVED LIQUIDS" @default.
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- W89061121 doi "https://doi.org/10.1016/b978-0-7506-0387-4.50192-3" @default.
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