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
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- 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. 12, May 1-July 31, 1986. [Effect of titanocene dichloride and sulfidation on catalyst coking]
Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM OXIDES
CATALYTIC EFFECTS
BENZOFURANS
HYDROGENATION
CATALYSTS
DEACTIVATION
COAL LIQUIDS
COBALT
DECALIN
KETONES
MOLYBDENUM
NICKEL
PHENANTHRENE
QUINOLINES
TETRALIN
THIONAPHTHENES
CATALYST SUPPORTS
EXPERIMENTAL DATA
ORGANOMETALLIC COMPOUNDS
PROGRESS REPORT
RADICALS
STRUCTURAL MODELS
TITANIUM COMPOUNDS
ALKANES
ALUMINIUM COMPOUNDS
AROMATICS
AZAARENES
AZINES
CHALCOGENIDES
CHEMICAL REACTIONS
CONDENSED AROMATICS
CYCLOALKANES
DATA
DOCUMENT TYPES
ELEMENTS
FLUIDS
FURANS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
INFORMATION
LIQUIDS
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYRIDINES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
400201 - Chemical & Physicochemical Properties