Transient kinetics of toluene partial oxidation over V/Ti oxide catalysts

Transient kinetics in the toluene oxidn. over V/Ti oxide catalysts prepd. by grafting and impregnation have been compared. V4+ cations are supposed to be the sites for the formation of electrophilic oxygen species participating in deep oxidn. Another oxygen species (probably nucleophilic) present on the oxidized catalyst surface are responsible for benzaldehyde formation. Selectivity of 80-100% can be obtained during the initial period of the reaction on the grafted catalysts in the presence of gaseous oxygen and during the interaction of toluene (without O2 in the mixt.) with partially reduced catalysts. [on SciFinder (R)]


Published in:
Catalysis Today, 61, 1-4, 271-277
Year:
2000
Keywords:
Note:
CAN 133:309626
22-7
Physical Organic Chemistry
Institute of Chemical Engineering,Swiss Federal Institute of Technology,Lausanne,Switz.
Journal
0920-5861
written in English.
124-38-9P (Carbon dioxide) Role: BYP (Byproduct), PREP (Preparation) (transient kinetics of toluene partial oxidn. over V/Ti oxide catalysts); 7727-18-6 (Vanadium chloride oxide (VCl3O); 13463-67-7 (Titania); 14974-48-2 (Vanadium oxalate); 22541-76-0 (Vanadium ion(4+) Role: CAT (Catalyst use), USES (Uses) (transient kinetics of toluene partial oxidn. over V/Ti oxide catalysts); 108-88-3 (Toluene) Role: PEP (Physical, engineering or chemical process), PRP (Properties), RCT (Reactant), PROC (Process), RACT (Reactant or reagent) (transient kinetics of toluene partial oxidn. over V/Ti oxide catalysts); 100-52-7P (Benzaldehyde) Role: SPN (Synthetic preparation), PREP (Preparation) (transient kinetics of toluene partial oxidn. over V/Ti oxide catalysts)
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