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Characterization and catalytic activity of Pd/V2O5/Al2O3 catalysts on benzene total oxidation

2004; Elsevier BV; Volume: 50; Issue: 4 Linguagem: Inglês

10.1016/j.apcatb.2004.01.006

1873-3883

R.S.G. Ferreira, P.G. Pries de Oliveira, Fábio B. Noronha,

Transition Metal Oxide Nanomaterials

The role of vanadium oxide and palladium on the benzene oxidation reaction over Pd/V2O5/Al2O3 catalysts was investigated. The Pd/V2O5/Al2O3 catalysts were more active than V2O5/Al2O3 and Pd/Al2O3 catalysts. The increase of vanadium oxide content decreased the Pd dispersion and increased the benzene conversion. A strong Pd particle size effect on benzene oxidation reaction was observed. Although the catalysts containing high amount of V4+ species were more active, the Pd particle size effect was responsible for the higher activity.