Infrared study of the selective oxidation of toluene and 0-xylene on vanadium oxide/TiO/sub 2/

Journal Article · Wed Oct 01 04:00:00 EDT 1986 · J. Catal.; (United States)

OSTI ID:5413724

van Hengstum, A J; Pranger, J; van Hengstum-Nijhuis, S M; van Ommen, J G; Gellings, P J

Infrared spectroscopy was used to obtain information on the mechanism of the selective oxidation of toluene and o-xylene over vanadium oxide catalysts. The interaction of these aromatic hydrocarbons and the products benzaldehyde and o-tolualdehyde with the surface of a V/sub 2/O/sub 5//TiO/sub 2/ monolayer catalyst was investigated at different temperatures under conditions comparable to those of the catalytic reaction. The infrared results obtained for each of these compounds showed a great resemblance, indicating that their oxidation proceeds along the same reaction path. Coordinatively adsorbed aldehydes, carboxylate-like structures, and benzoate species could be identified as intermediates on the surface of the catalysts. On the basis of the spectroscopic observations a possible reaction mechanism has been proposed. 24 references.

• Research Organization: Twente Univ. of Technology, Enschede, Netherlands
• OSTI ID: 5413724
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 101:2; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020500 -- Petroleum-- Products & By-Products
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALDEHYDES
ALKYLATED AROMATICS
AROMATICS
CATALYST SUPPORTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
HYDROCARBONS
INFRARED SPECTRA
KINETICS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
REACTION INTERMEDIATES
REACTION KINETICS
SPECTRA
TEMPERATURE DEPENDENCE
TITANIUM COMPOUNDS
TITANIUM OXIDES
TOLUENE
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
VANADIUM OXIDES
XYLENES