Catalysis Database

Dispersion and thermal stability of vanadium oxide catalysts supported on titania-silica mixed oxide

Benjaram M, Reddy and Safia, Mehdi and E, Padmanabha Reddy (1993) Dispersion and thermal stability of vanadium oxide catalysts supported on titania-silica mixed oxide. Catalysis Letters, 20 . pp. 317-327.

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Abstract

The influence of heat treatments on the dispersion and thermal stability of series of titania- silica mixed oxide supported vanadia catalysts has been investigated by X-ray diffraction, infrared, oxygen chemisorption and surface-area measurements. The results of V2O5/TiO2- SiO2 catalysts calcined at 773 K suggest that vanadia (upto 20 wt%) is in highly dispersed state on the carrier. Thermal treatments at 873 K and above transform vanadia and titania into crystalline phases and then TiO2 anatase into rutile. In the absence of vanadia the TiO2-SiO2 remains unaffected by thermal treatments.

Item Type:Article
Subjects:Science > Chemistry
ID Code:682
Deposited By:Mr Magesh ganesan
Deposited On:04 May 2007 20:47
Last Modified:04 May 2007 20:47

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