Building Block Approach to SiO2-TiO2 Porous Materials

(2-Hydroxyethyl)trimethylammonium silicate and titanium bis(triethanolaminate) were allowed for a reaction in methanol.The reaction proceeded without breakdown of the Si8O208− structure of the silicate to give SiO2-TiO2 gels. Heat-treatment of the gels at 650-1000 °C in air for 1 h yielded SiO2-TiO2 powders with high surface areas (496-127 m2 g−1, respectively), whose TiO2 component is dominantly present as anatase.