Photooxidation of methanol using V/sub 2/O/sub 5//TiO/sub 2/ and MoO/sub 3//TiO/sub 2/ surface oxide monolayer catalysts

Journal Article · Thu Oct 23 00:00:00 EDT 1986 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100280a087· OSTI ID:7005490

Carlson, T; Griffin, G L

The authors have compared the conversion and selectivity obtained using 7 wt% V/sub 2/O/sub 5//TiO/sub 2/ and 4.0 wt% MoO/sub 3//TiO/sub 2/ catalysts for the partial oxidation of CH/sub 3/OH, as a function of reaction temperature and illumination. The thermally controlled reaction is faster and slightly less selective to CH/sub 2/O on the vanadia/TiO/sub 2/ catalyst. In contrast, the incremental photoassisted reaction rate is much lower on the vanadia catalyst than on the molybdena catalyst, which in turn is less photoactive than pure TiO/sub 2/. The observed sequence of the relative photoactivities varies inversely with the concentration of V or Mo cations in the surface oxide monolayers, which suggests that the photoassisted alkoxy dehydrogenation process occurs primarily at exposed TiO/sub 2/ surface sites.

• Research Organization: Univ. of Minnesota, Minneapolis
• OSTI ID: 7005490
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 90:22; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

090210 -- Alcohol Fuels-- Properties-- (1976-1989)
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ALCOHOLS
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
DATA
EXPERIMENTAL DATA
HYDROXY COMPOUNDS
INFORMATION
METHANOL
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
REFRACTORY METAL COMPOUNDS
TEMPERATURE DEPENDENCE
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
VANADIUM OXIDES
YIELDS