为了有效降低SO_x在环境中的排放，以嵌段共聚物F127和新合成的PMMA微球为双模板，采用溶胶-凝胶法制备了三维有序介孔-大孔x-HPW/TiO₂催化剂。利用扫描电镜、透射电镜、氮气吸附-脱附、X射线衍射和红外光谱研究了其结构，并考察了其催化氧化燃油中有机硫的性能。结果表明，x-HPW/TiO₂催化剂中存在高度有序的介孔-大孔结构，Keggin结构的HPW均匀分散在TiO₂孔道骨架中。该催化剂在常压、60℃下可使燃油中的二苯并噻吩（DBT）催化氧化完全，循环使用6次后对DBT的去除率仍可达到96%。

To reduce the emission of SOx effectively in the environment,a kind of three-dimensional highly ordered mesoporous-macroporous x-HPW/TiO₂ (3DO m/M x-HPW/TiO₂) catalyst is synthesized successfully through sol-gel method using block copolymer F127 and self-synthesized PMMA microspheres as templates.The structure of catalyst is studied by scanning electron microscope,transmission electron microscopy,nitrogen adsorption-desorption isotherms,X-ray diffraction and Fourier transform infrared spectra,and its catalytic performance for oxidation of organic sulfur in fuel oil is also explored.The results show there exists highly ordered mesoporous-macroporous structures in the catalyst,and HPW with a Keggin structure disperses evenly in TiO₂ framework.Dibenzothiophene (DBT) in fuel oil can be completely removed over the catalyst at atmospheric pressure and 60℃.The removal rate of DBT can still reach 96% after the catalyst has been used for 6 cycles.