Selective oxidation of pentane over Al{sub 2}O{sub 3}- and SiO{sub 2}-supported vanadia catalysts
In the studies of butane oxidation over supported vanadium oxides mentioned above, carbon oxides, butenes, and butadiene accounted for almost all of the reaction products, with only small amounts (less than 10%) of oxygenated products. Since the formation of oxygenated products probably involves the participation of lattice oxygen, it should depend also on the reducibility of the cations. It has been reported that oxygenates were formed in the oxidation of pentane over VPO, 12-molybdophosphoric acid, vanadomolybdophosphates, and vanadium-substituted molybdophosphoric acid. In particular, both maleic anhydride and phthalic anhydride were formed with high selectivities on VPO, whereas maleic anhydride was formed on the heteropoly acids. Therefore, it seems that the oxidation of pentane can be used to further study the variation of selectivity on supported vanadia catalysts. Here, the authors report the results of such a study on vanadia catalysts supported on SiO{sub 2} and {gamma}-Al{sub 2}O{sub 3}. 11 refs., 2 figs., 1 tab.
- OSTI ID:
- 223996
- Journal Information:
- Journal of Catalysis, Vol. 158, Issue 1; Other Information: PBD: Jan 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
X-Ray Absorption Studies of Vanadium-Containing Metal Oxide Nanocrystals
Reactivity of molybdovanadophosphoric acids: Influence of the presence of vanadium in the primary and secondary structure