Project deals with development and optimalization of extraction technique for purification and total crystalization prepared oxidic materials with high-ordered mesoporous structure. Developed extraction technique using fluids in supercritic and subcritic state will be generally aplicable for synthesis of nanocrystalline metal oxides. The optimal experimental conditions (temperature, pressure, flow rate etc.) as same as the suitable solvents will be defined and evaluated also with respect to future technical and economic realization of methodology. High-ordered mesoporous metal oxides (hexagonal, cubic, lamellar) TiO2, ZrO2, SiO2/TiO2, ZrO2/TiO2, CeO2, Nb2O5, Ta2O5, SnO2 promising in photocatalysis and sandwich structures in microelectronic will be synthetized by templating using amphipilic and ionic surfactants in aqueous and alcoholic solution with metal chloride and alkoxide.