Application of zeolite-based catalyst to hydrocracking of coal-derived liquids

Y-zeolite supported catalysts were applied to the hydrocracking of coal-derived liquids. By the introduction of two-stage upgrading consisting of hydrotreating and hydrocracking, Wandoan coal-derived middle distillate was hydrocracked over NiMo/Y-zeolite, producing a high gasoline fraction yield. Z...

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Bibliographic Details
Published in:Fuel processing technology 1990-06, Vol.25 (2), p.153-165
Main Authors: Shimada, Hiromichi, Sato, Toshio, Yoshimura, Yuji, Hinata, Atsuyoshi, Yoshitomi, Suehiko, Castillo Mares, Alfredo, Nishijima, Akio
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Exact sciences and technology
Fuel processing. Carbochemistry and petrochemistry
Fuels
Solid fuel processing (coal, coke, brown coal, peat, wood, etc.)
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Summary:Y-zeolite supported catalysts were applied to the hydrocracking of coal-derived liquids. By the introduction of two-stage upgrading consisting of hydrotreating and hydrocracking, Wandoan coal-derived middle distillate was hydrocracked over NiMo/Y-zeolite, producing a high gasoline fraction yield. Zeolite supported catalysts gave little hydrocracked compounds in the hydroprocessing of coal-derived heavy oils, even after hydrotreatment. The reaction inhibitors which seriously poison the active sites of zeolites were found to be small nitrogen-containing molecules. In the hydroprocessing of coal-derived heavy oils, zeolite supported catalysts were inferior to alumina supported catalysts. This is due to the high hydrocracking but low hydrogenation activity of zeolite supported catalysts.
ISSN:0378-3820
1873-7188
DOI:10.1016/0378-3820(90)90102-X