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.
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IICT Communication No. 3176.
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Mahipal Reddy, B., Mehdi, S. & Padmanabha Reddy, E. Dispersion and thermal stability of vanadium oxide catalysts supported on titania-silica mixed oxide. Catal Lett 20, 317–327 (1993). https://doi.org/10.1007/BF00769304
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DOI: https://doi.org/10.1007/BF00769304