Hydrotreatment catalyst activity enhancement: Final report for the period August 1, 1983--March 31, 1987. [Investigate mechanism by which titanocene dichloride affects catalyst coking and activity]
This project originated from an earlier observation that addition of titanocene dichloride to an SRC-II light oil resulted in a moderate reduction in catalyst coking and a significant increase in the hydrotreatment activity of the catalyst. The objectives of this project were to study the fate of titanocene dichloride under hydrotreatment conditions and investigate the mechanisms by which titanocene dichloride affects the catalyst coking and activity. Hydrotreatment of seven model compounds (tetralin, decalin, phenanthrene, methyl-isobutyl-ketone, quinoline, dibenzothiophene, and dibenzofuran) on two commercial catalysts (NiMo/alumina and CoMo/alumina) and a commercial alumina substrate was studied. Titanocene dichloride was either added to the liquid feed or used to impregnate the catalyst. The results of model compound work led us to study the role of free radicals in hydrotreatment of two coal liquids and the effect of titanocene dichloride on free radical formation. Furthermore, the suitability of a gradientless recycle reactor to study reaction kinetics and catalyst coking in a gas-liquid-solid system was evaluated. Overall this project showed the potential of using organometallic compounds in hydropressing to increase conversions and decrease catalyst coking. However, further work is needed to develop this method into a technically feasible process. 101 figs., 87 tabs.
- Research Organization:
- Oklahoma State Univ., Stillwater (USA). School of Chemical Engineering
- DOE Contract Number:
- FG22-83PC60813
- OSTI ID:
- 6901424
- Report Number(s):
- DOE/PC/60813-15; ON: DE88008511
- Country of Publication:
- United States
- Language:
- English
Similar Records
Hydrotreatment catalyst activity enhancement. Quarterly report No. 9, August 1-October 31, 1985
Hydrotreatment catalyst activity enhancement. Quarterly report No. 11, February 1-April 30, 1986. [With and without titanocene dichloride using Shell 324 or Shell 344 catalysts]
Related Subjects
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKANES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AROMATICS
AZAARENES
AZINES
BENZOFURANS
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL LIQUIDS
COBALT
CONDENSED AROMATICS
CYCLOALKANES
DATA
DEACTIVATION
DECALIN
DOCUMENT TYPES
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
FURANS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROGENATION
INFORMATION
KETONES
LIQUIDS
METALS
MOLYBDENUM
NICKEL
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
ORGANOMETALLIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHENANTHRENE
PROGRESS REPORT
PYRIDINES
QUINOLINES
RADICALS
STRUCTURAL MODELS
TETRALIN
THIONAPHTHENES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS