Catalytic properties of Bi{sub 4}V{sub 2-x}Sb{sub x}O{sub 11-{delta}} in methanol oxidation
- UMIST, Manchester (United Kingdom)
Ceramic model catalysts of general formula Bi{sub 4}V{sub 2-x}Sb{sub x}O{sub 11-{delta}} are synthesized by solid-state reaction. X-ray diffraction shows the materials to be single phase over the composition range 0 {le} x {le} 0.3, with a second phase, which is not identified, produced at higher antimony doping level. XPS results show oxidation states of +IV and +V for vanadium in these compounds. These results also indicate that the proportion of antimony on the surface of the compounds is greater than that in the bulk of these compounds. The catalytic properties of the materials are examined using methanol oxidation as a test reaction. The activity and selectivity to formaldehyde production shown by these materials is found to be strongly correlated with the antimony doping level. 32 refs., 6 figs., 3 tabs.
- OSTI ID:
- 563507
- Journal Information:
- Journal of Catalysis, Journal Name: Journal of Catalysis Journal Issue: 1 Vol. 167; ISSN 0021-9517; ISSN JCTLA5
- Country of Publication:
- United States
- Language:
- English
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