Catalytic hydrodesulfurization of o-aminobenzyl sulfides
Hydrodesulfurization of ortho-aminobenzylsulfides to ortho-alkylanilines with particular attention to the reaction of 2-methylthiomethyl-6-trifluoromethylaniline to 2-methyl-6-trifluoromethylaniline has been examined in a batch reactor at 453-473 K and hydrogen pressures between 1034 and 13,785 kPA. Application of typical hydroprocessing catalysts, such as sulfided CoO-MoO/sub 3/..gamma..-Al/sub 2/O/sub 3/, fails to retain the substituent groups while selectively cleaving the carbon-sulfur bonds. Use of sulfided CoO-MoO/sub 3/-on-carbon and various unsupported, sulfided Co/sub x/Mo/sub y/O/sub z/ catalysts with xy in the range 14 to 41 gives high selectivity to the organic product. An abbreviated kinetic study using unsupported, presulfided CoMoO/sub 4/ shows that the reaction rate is first order with respect to the gas and liquid reactant with no noticeable inhibition effects. Comparisons between reaction rates for this reaction to those for typical petroleum hydrodesulfurization reactions show that the current system proceeds at significantly lower temperatures with an order-of-magnitude higher rates. 30 references
- Research Organization:
- Monsanto Co., St. Louis, MO (USA)
- OSTI ID:
- 5259504
- Journal Information:
- J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 97:1; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020400* -- Petroleum-- Processing
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AMINES
CATALYST SUPPORTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COBALT COMPOUNDS
COBALT OXIDES
COMPARATIVE EVALUATIONS
DESULFURIZATION
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGENATION
KINETICS
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
POLYCYCLIC AROMATIC AMINES
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS