利用共沉淀-浸渍的方法,制备出Fe_3O_4@AC非均相磁性催化剂,并在超声辐照条件下,采用该催化剂催化过硫酸钠降解水中的苯胺。实验结果表明,超声耦合Fe_3O_4@AC非均相催化过硫酸钠降解水中苯胺具有较好的效果,当超声功率为100 W,频率45 Hz,pH为3.0,过硫酸盐浓度为240 mg/L,温度20oC时,反应时间为30 min时苯胺的去除率达到了91.5%。而且苯胺的降解过程遵循准一级动力学过程。 Fe_3O_4 @ AC heterogeneous magnetic catalyst was prepared by coprecipitation-impregnation method. Under the condition of ultrasonic irradiation, the catalyst was used to catalyze the degradation of aniline with sodium persulfate. The experimental results show that ultrasonic coupling Fe 3 O 4 @ AC heterogeneous catalysis sodium perulfite degradation of aniline in water has good results, when the ultrasonic power of 100 W, the frequency of 45 Hz, the pH of 3.0, the persulfate concentration of 240 mg / L, When the temperature is 20oC, the aniline removal rate reaches 91.5% when the reaction time is 30 min. And the aniline degradation process follows the quasi-first-order kinetic process.