Hydrotreatment catalyst activity enhancement. Quarterly report No. 3, February 1-April 30, 1984. [Titanocene dichloride]
Tetralin and a mixture of 5% phenanthrene in Tetralin were hydrotreated in a two-stage trickle-bed reactor over a commercial Ni-Mo/Alumina catalyst at 350/sup 0/C (662/sup 0/F) and 10.34 MPa (1500 psia). These runs were compared with the runs where 100 ppM of titanium as titanocene dichloride were added to the feedstocks. Both the catalyst and oil samples were analyzed to measure the catalyst activity and coking. An additional run was made to check the reproducibility of experiments. Meanwhile, preliminary studies were conducted on the homogeneous reaction of Tetralin with titanocene dichloride. These studies indicate a slow homogeneous reaction occurring between Tetralin and titanocene dichloride at room temperatures. Hydrotreatment experiments show that the addition of titanocene dichloride to the feedstocks increases the H/C ratio of the products. Similar effects are also observed when the distillation curves of the products are compared. Addition of titanocene dichloride lowers the bubble point curves for both feedstocks. However, the effects on the coke formation depend on the hydrocarbon feedstock used. While the addition of titanocene dichloride decreases the coke formation for Tetralin/phenanthrene feedstock, it gives increased coking when only Tetralin is hydrotreated. Gas chromatographic analyses show that Tetralin is hydrogenated to cis- and trans-decalin, with small amounts of naphthalene formed as by-products of the process. Preliminary analysis of results excludes titanium or chloride as possible reasons of interference. It also indicates that probably the interference originates from some organic intermediates that are generated from titanocene dichloride. Further studies will be conducted to verify these results. 10 figures, 3 tables.
- Research Organization:
- Oklahoma State Univ., Stillwater (USA). School of Chemical Engineering
- DOE Contract Number:
- FG22-83PC60813
- OSTI ID:
- 5000323
- Report Number(s):
- DOE/PC/60813-3; ON: DE84011558
- Country of Publication:
- United States
- Language:
- English
Similar Records
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]
Hydrotreatment catalyst activity enhancement. Quarterly report No. 12, May 1-July 31, 1986. [Effect of titanocene dichloride and sulfidation on catalyst coking]
Related Subjects
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AROMATICS
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMATOGRAPHY
COAL LIQUIDS
COKE
CONDENSED AROMATICS
DATA
DEACTIVATION
DEPOSITION
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
GAS CHROMATOGRAPHY
HIGH PRESSURE
HIGH TEMPERATURE
HYDROCARBONS
HYDROGENATION
INFORMATION
LIQUIDS
METALS
MOLYBDENUM
NICKEL
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHENANTHRENE
PROMOTERS
RESEARCH PROGRAMS
SEPARATION PROCESSES
STRUCTURAL MODELS
TETRALIN
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS