用溶胶 -凝胶法制备了多孔性 Ti O2 和 SO2 -4 /Ti O2 催化剂 ,对其结构进行了表征 ,并以 C2 H4 为模型反应物考察了微波对催化剂的光催化氧化反应性能的影响 .在微波场中 Ti O2 和 SO2 -4 /Ti O2 催化剂的光催化氧化性能得到明显改善 ,无微波场时乙烯转化率分别为 2 0 % ( Ti O2 )和 4 1 % ( SO2 -4 /Ti O2 ) ,而在微波辐射和紫外光的同时作用下乙烯转化率分别提高到 2 7%和 62 % ,SO2 -4 /Ti O2 催化剂的微波场助效应更为显著 The porous Ti O2 and SO2-4 / Ti O2 catalysts were prepared by sol-gel method and their structures were characterized. The influence of microwave on the photocatalytic oxidation performance of the catalysts was investigated by using C2H4 as model reactant. In the microwave field, the photocatalytic oxidation performance of Ti O2 and SO2 -4 / Ti O2 catalysts was significantly improved. The ethylene conversion rates were 20% (Ti O2) and 41% (SO2-4 / Ti O2 ), While the conversion of ethylene was increased to 27% and 62% respectively under the simultaneous irradiation of microwave radiation and UV light. The microwave field-assisted effect of SO2-4 / Ti O2 catalyst was more significant