Patent attributes
A process for the preparation of a TiO2-containing catalyst or catalyst support which is stable to high temperatures is described. In this processan aqueous Ti-containing solution having a concentration of dissolved Ti equivalent to 10 to 250 g TiO2 per liter of solution is added to a suspension of not more than 10 wt. % strength of a finely disperse inorganic support material in water,the inorganic support material having a specific surface area, measured by the BET method, of >20 m2/g and any primary particle agglomerates present having a particle size of d50<10 μm, preferably <5 μm,the rate of addition of the Ti-containing solution to the suspension being chosen such that an addition equivalent to 0.05 g TiO2 per m2 of support surface and hour is not exceeded,the TiO2 is precipitated on the inorganic support and the product obtained is filtered, washed and calcined.
