Catalytic hydrotreatment studies with model compounds. Quarterly report, April 1-June 30, 1984. [Effect of water]

Technical Report · Sun Jan 01 04:00:00 EST 1984

OSTI ID:6744646

Satterfield, C N; Smith, C M

In the last quarterly report we reported quantitative information on the enhancing effect of water on the hydrodenitrogenation (HDN) of quinoline on a sulfided NiMo/Al/sub 2/O/sub 3/ catalyst, in either the presence or absence of H/sub 2/S. We have now obtained some additional data (catalyst sample No. 15) and, using a slight modification of a kinetic model we previously developed for the HDN of quinoline, we have now interpreted these and previous data in terms of the effect of water on the various individual reactions in the overall HDN process. In isothermal experiments at 375/sup 0/C and 6.9 MPa, it is shown that the addition of water significantly enhances hydro-genolysis rate constants in the HDN reaction of quinoline over a presulfided NiMo/Al/sub 2/O/sub 3/ catalyst; this is observed in either the presence or absence of hydrogen sulfide. Hydrogenation rates are increased by the addition of water in the presence of H/sub 2/S and unchanged in the absence of H/sub 2/S. However, predicted hydrogenation rate constants are very sensitive to the choice of adsorption constants used in the mathematical model. Adsorption constants in the model are reduced by the addition of water when H/sub 2/S is present. The data are interpreted in terms of a Langmuir-Hinshelwood type of kinetic model. This work is described in more detail in a self-standing report that is attached. 10 figures, 4 tables.

• Research Organization: Massachusetts Inst. of Tech., Cambridge (USA). Dept. of Chemical Engineering
• DOE Contract Number: FG22-83PC60798
• OSTI ID: 6744646
• Report Number(s): DOE/PC/60798-3; ON: DE84015731
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
010403* -- Coal & Coal Products-- Hydrogenation-- (-1987)
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AROMATICS
AZAARENES
AZINES
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
DENITRIFICATION
ELEMENTS
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROGENATION
INFORMATION
MEDIUM PRESSURE
METALS
MOLYBDENUM
NICKEL
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYRIDINES
QUINOLINES
SULFIDATION
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENTS
WATER