INCAPE 05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
artículos
Título:
Deep oxidation of benzene on Pt/V2O5-TiO2 catalysts
Autor/es:
T.F. GARETTO; M.S. AVILA; CH. VIGNATTI; V. V. RAO; K. V. CHARY; C.R. APESTEGUÍA
Revista:
CATALYSIS LETTERS
Editorial:
Springer
Referencias:
Año: 2009 vol. 130 p. 476 - 482
ISSN:
1011-372X
Resumen:
The combustion of benzene was studied on Pt supported on V2O5-TiO2 samples containing different amounts of V2O5. Vanadium was highly dispersed as V+4 for low V2O5 loadings, forming a vanadia monolayer on titanium dioxide for a V2O5 concentration of about 5 %wt. V2O5-TiO2 samples were more active than V2O5 and TiO2 single oxides, and the activity increased with the vanadia content. The platinum dispersion in Pt/V2O5-TiO2 catalysts increased with the V2O5 loading but the activity for the deep oxidation of benzene exhibited an opposite trend. Benzene combustion was a structure sensitivity reaction promoted on larger metallic Pt crystallites which were preferentially formed when the V2O5 content in the sample was decreased.
