采用沉淀法、共沉淀法、溶胶凝胶法(W)和溶胶-凝胶法(E)制备TiO2-Al2O3复合载体,并采用XRD、BET和TEM等方法进行表征。结果表明,沉淀法、溶胶凝胶法(W)和溶胶-凝胶法(E)制成的复合载体基本保留了最初引入的γ-Al2O3的孔特征,具有较大的比表面积、孔体积和孔径,TiO2以锐钛矿晶型存在,且主要以表面富集的形式分散在γ-Al2O3表面;而共沉淀法制成的复合载体比表面积、孔体积和孔径最小,孔径分布更加集中,TiO2在整个体相均匀分散。 TiO2-Al2O3 composite carrier was prepared by precipitation, coprecipitation, sol-gel method and sol-gel method (E), and characterized by XRD, BET and TEM. The results showed that the composite carrier prepared by precipitation method, sol-gel method and sol-gel method (E) basically retained the pore features of γ-Al2O3 initially introduced, and had large specific surface area, pore volume and The pore size and the anatase phase of TiO 2 are present in the anatase phase, and are mainly distributed in the form of surface enrichment on the γ-Al 2 O 3 surface. The complex carrier prepared by the coprecipitation method has the smallest specific surface area, pore volume and pore size, The whole body evenly dispersed.