Development of unique catalysts for hydrodenitrogenation of coal-derived liquids. Sixth quarterly report, December 15, 1979-March 15, 1980

Technical Report · Sun Jun 01 00:00:00 EDT 1980

DOI:https://doi.org/10.2172/6898271· OSTI ID:6898271

Katzer, J. R.; Stiles, A. B.; Kwart, H.

Hydrodenitrogenation of decahydroquinoline has been studied using catalysts prepared by coprecipitation or impregnation of Ni, Mo on magnesium oxide support. Preliminary results show that molybdenum plays an important role in carbon-nitrogen bond scission. The nitrogen removal rates using Mo on ..gamma..-alumina support are considerably higher than Mo on magnesia support. More runs have been made using sulfided and unsulfided catalysts. Recent results show that sulfiding of the catalysts does not deactivate them. Catalysts have been prepared and tested with the emphasis on understanding the role of acidity on the carbon-nitrogen bond scission reaction and on direct removal of nitrogen without ring hydrogenation. A comparison of 2% Ni, 2% Mo/A1BO/sub 3/ catalysts prepared by two different techniques (impregnation and coprecipitation) showed that the catalyst prepared by coprecipitation removed nitrogen more quickly than the catalyst prepared by impregnation. Several Ni, Mo/fluorided alumina catalysts with various levels of fluorine content (to increase the acidity of alumina support) were prepared by a commercial catalyst supplier. Preliminary results from this study indicate that the fluorided ..gamma..-alumina catalysts slightly enhanced the hydrogenolysis activity but showed little effect on the hydrogenation activity. Several other catalysts with different acidity function have been prepared and are now being evaluated.

• Research Organization: Delaware Univ., Newark (USA). Dept. of Chemical Engineering
• DOE Contract Number: AS01-78ET03297
• OSTI ID: 6898271
• Report Number(s): FE-3297-6
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
ALUMINIUM
CATALYTIC EFFECTS
CATALYSTS
CHEMICAL PREPARATION
TESTING
COAL LIQUIDS
DENITRIFICATION
MAGNESIUM OXIDES
MOLYBDENUM
NICKEL
BORATES
COPRECIPITATION
EXPERIMENTAL DATA
FLUORIDES
IMPREGNATION
NITROGEN
PH VALUE
QUINOLINES
REMOVAL
ALKALINE EARTH METAL COMPOUNDS
AZINES
BORON COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
ELEMENTS
FLUIDS
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
INFORMATION
LIQUIDS
MAGNESIUM COMPOUNDS
METALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PRECIPITATION
PYRIDINES
REFRACTORY METALS
SEPARATION PROCESSES
SYNTHESIS
TRANSITION ELEMENTS
010402* - Coal
Lignite
& Peat- Purification & Upgrading