Preparation of highly dispersed anchored vanadium oxides by photochemical vapor deposition method and their photocatalytic activity for isomerization of trans-2-butene
- Univ. of Osaka Prefecture, Sakai (Japan)
- Universite P. et M. Curie, Paris (France)
Highly dispersed anchored vanadium oxide catalysts have been first prepared by using facile reaction of the photochemically activated VOCl{sub 3} molecules with surface OH groups on Vycor glass. Anchored vanadium oxides prepared by photochemical method (photo-CVD) exhibit much higher yields in the phosphorescence with its long lifetimes (450 {mu}s). These anchored vanadium oxides exhibit a higher activity for the photocatalytic isomerization reactions of 2-butene, as compared with those obtained for the oxides prepared by conventional impregnation method. A good linear relationship between the yields of photocatalytic isomerization and the yields of phosphorescence from the charge-transfer excited triplet state of the surface vanadyl species in tetrahedral coordination is obtained, indicating that not only the surface vanadyl species play a significant role in the photocatalytic reaction on vanadium oxide catalysts, but also a photochemical vapor deposition method leads to the higher dispersion of vanadium than impregnation method.
- OSTI ID:
- 5113370
- Journal Information:
- Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 93:4; ISSN 0022-3654; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
Similar Records
In situ characterization of the vanadium silicalite catalyst (VS-2) and its photocatalytic reactivity
Relationship between the geometry of the excited state of vanadium oxides anchored onto SiO sub 2 and their photoreactivity toward CO molecules
Related Subjects
400201* -- Chemical & Physicochemical Properties
ALKENES
BUTENES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL COATING
CHEMICAL REACTIONS
CHEMICAL VAPOR DEPOSITION
DATA
DEPOSITION
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
ISOMERIZATION
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
SURFACE COATING
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
VANADIUM OXIDES