Competing reactions in hydrotreating coker distillates from Athabasca bitumen on unpromoted and promoted catalysts. [Comparison of unpromoted Mo oxide/alumina catalysts and promoted NiO--Mo oxide/alumina and CoO--Mo oxide/alumina catalysts]
Desulfurization, denitrogenation, and hydrogenation reactions occur simultaneously in a hydrotreating process. Several unpromoted MoO/sub 3//alumina catalysts and promoted NiO--MoO/sub 3//alumina and CoO--MoO/sub 3//alumina catalysts were evaluated to compare the characteristics of these competing reactions. A coker kerosene distillate (193 to 279/sup 0/C) derived from Athabasca bitumen was used to evaluate the catalyst activity in the hydrotreating studies. The denitrogenation activity was higher than desulfurization activity for all MoO/sub 3//alumina catalysts. Promotion of MoO/sub 3//alumina catalysts with nickel or cobalt selectively improved desulfurization so that the extent of the various reactions decreased in the following order: desulfurization greater than denitrogenation greater than aromatic hydrogenation. The interactions of denitrogenation and desulfurization reactions at various temperatures were compared for promoted and unpromoted catalysts. The results obtained by others for hydrotreating gas oil and low temperature tar were also compared. The conversions and the interaction of desulfurization and denitrogenation reactions were found to be dependent on the type of catalyst, temperature of reaction and boiling range of the feedstock.
- Research Organization:
- Energy Research Labs., Ottawa, Ontario
- OSTI ID:
- 7119735
- Journal Information:
- Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States), Journal Name: Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States) Vol. 21:6; ISSN ACFPA
- Country of Publication:
- United States
- Language:
- English
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ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ATHABASCA DEPOSIT
BITUMENS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CATALYSIS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
COBALT COMPOUNDS
COBALT OXIDES
COMPARATIVE EVALUATIONS
CRYOGENIC FLUIDS
DENITRIFICATION
DESULFURIZATION
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GAS OILS
GEOLOGIC DEPOSITS
HYDROGENATION
KEROSENE
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
NICKEL COMPOUNDS
NICKEL OXIDES
NITROGEN
NONMETALS
OIL SAND DEPOSITS
OIL SANDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PROMOTERS
REMOVAL
SHALE TAR
SULFUR
TAR
TRANSITION ELEMENT COMPOUNDS