The physicochemical properties (crystal structure, surface acidity, surface area, catalytic activity and electrical conductivity)
of TiO2-silica gel mixed oxides have been investigated. A series of mixed oxides of various compositions in the range of 0–100% for
each component were prepared by calcining the mixed oxides in air at temperatures of 115, 300, 600 and 1000°C. The results
obtained have been discussed and correlated.