Crossed reaction networks in the catalytic hydrodenitrogenation of synthetic liquid fuels. Final report

Technical Report · Sat Mar 10 04:00:00 EST 1984

OSTI ID:5267181

Satterfield, C N

Several of our findings are particularly noteworthy: (1) we have shown that the method of presulfiding of a commercial NiMo/Al/sub 2/O/sub 3/ catalyst can have a significant effect on its activity for hydrodenitrogenation (HDN) of quinoline. Of three methods studied, the most intense resulted in the most active catalyst, whereas in hydrodesulfurization an intermediate degree of presulfiding seems to be best; (2) in addition to the above, addition of H/sub 2/S to the reaction mixture increases the HDN rate and removal of H/sub 2/S decreases it, in a reversible manner; (3) small concentrations of water vapor also increase HDN, especially if H/sub 2/S is also present. An oxygenated compound such as a phenol or furan may decrease the rate of HDN, if it is relatively unreactive, by competitive adsorption. However, water, formed by HDO reactions, will increase HDN; (4) the kinetic behavior of quinoline HDN is remarkably the same in liquid-phase reaction as in vapor-phase reaction. The accelerating effects of H/sub 2/S work similarly in either phase; and (5) addition of NH/sub 3/ markedly reduces the rate of hydrogenation reactions. Although it also reduces HDN rates, this is an interesting lead to a means of reducing overall hydrogen consumption in hydrotreating reactions.

• Research Organization: Massachusetts Inst. of Tech., Cambridge (USA)
• DOE Contract Number: AC22-80PC30075
• OSTI ID: 5267181
• Report Number(s): DOE/PC/30075-T1; ON: DE84007714
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AROMATICS
AZAARENES
AZINES
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL LIQUIDS
CONSUMPTION RATES
DENITRIFICATION
DESULFURIZATION
ELEMENTS
FLUIDS
HETEROCYCLIC COMPOUNDS
HYDROGEN
HYDROGENATION
LIQUIDS
METALS
MOLYBDENUM
NICKEL
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PYRIDINES
QUINOLINES
SYNTHESIS
TRANSITION ELEMENTS