Abstract: TiO_2-Al_2O_3 binary oxides were prepared by precipitation from TiCl_4 solution with aqueous ammonia; impregnation, using evaporation from titanium isoproxide in iso-propanol; and grafting, using reaction of TiCl_4 vapour with OH~- group on Al_2O_3 surface.
AEM was used to examine the morphology of TiO_2 on Al_2O_3. The results show that relative homogeneous distribution of TiO_2 on Al_2O_3 could be formed for im-pregnated samples when TiO_2 loading was not beyond one monolayer. A quite homo-geneous coverage of TiO_2 was obtained for grafting samples through anchoring of TiCl_4 molecule on OH~- group of Al_2O_3 surface. As for precipitated samples the distribution of TiO_2 was rather poor. TiO_2 covered only a part of Al_2O_3 surface.