CINDECA   05422
CENTRO DE INVESTIGACION Y DESARROLLO EN CIENCIAS APLICADAS "DR. JORGE J. RONCO"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Catalytic oxidation by Fe- and Cu-doped molybdovanadophosphoric acids
Autor/es:
P. VILLABRILLE, G. ROMANELLI, L. GASSA, C. CÁCERES, P. VÁZQUEZ
Lugar:
USA
Reunión:
Congreso; XX Nort American Catalysis Society Meeting; 2007
Institución organizadora:
Nort American Catalytic Society
Resumen:
Because of their excellent characteristics, bulk heteropolyacids with Keggin structure (HPA) and their salts are widely used in industrial catalysis. Heteropolyacids having mixed addenda atoms such as V and Mo are attractive for the molecular design. It is important to mention that the polyanion structures are maintained at low-temperature reactions. On the other hand, it is important to emphasize that the quinone derivatives play an important role in biosystems. Natural products having a benzoquinone structure show biologically important properties such as cardiovascular, antitumoral, antibacterial, antigerminative and antiprotozoan activities. Furthermore, benzoquinones are useful fine chemicals in organic industry. For example, 2,3,5-trimethyl-1,4-benzoquinone is a key intermediate in the production of Vitamin E. In the present paper, we report the preparation of Fe- and Cudoped Keggin heteropolyacids where one Mo was substituted by one V, and their characterization by means of FT-IR,31P-NMR, DRS, XRD, thermal analysis, potentiometric titration, and electrochemical measurements. In addition, the activity of the synthesized catalysts for the oxidation reaction 2,6-dimethylphenol to 2,6-dimethyl-1,4-benzoquinone, using H2O2 as oxidant at room temperature, was tested.
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