关键词: 二氧化钛, 分子筛, 热重量分析, Ｘ射线衍射分析, 透射电子显微术

Ordered mesoporous titanium oxides were synthesized using a block copolymer as a structure-directing agent through N^0I^0 assembly pathway. The calcined mesoporous samples were characterized by TG-DTA, XRD, TEM and N~2 adsorption methods. These mesoporous oxides have inorganic framework and thick channel wall, in which small crystallites of anatase TiO~2 can be formed during calcination. The incorporation of Ce^3^+ ions into the channel wall dramatically improves the stability of the mesoporous structure.

Key words: TITANIUM DIOXIDE, MOLECULAR SIEVE, THERMOGRAVIMETRY, X- RAY DIFFRACTION ANALYSIS, TRANSMISSION ELECTRON MICROSCOPY