中文摘要：

采用浸渍、强化水解和后续水浴加热的方法制得催化剂Fe-Al/Al2O3,并通过XRD和XPS等表征手段对其结构性能进行了研究.结果表明,催化剂中铁是以二价和三价存在,且以三价铁为主;铝则以Al2O3和AlOOH形态存在.与单独臭氧化相比,Fe-Al/Al2O3既能高效矿化水中的难降解有机物2,4-二氯苯氧乙酸（2,4-D）,又能明显抑制溴酸盐的生成,体现出很好的循环使用稳定性.进一步探讨了臭氧投加量和溴离子初始浓度对催化臭氧化效率和溴酸盐生成的影响.研究表明,在Fe-Al/Al2O3催化臭氧化过程中,水中溴酸盐浓度受臭氧投加量和溴离子初始浓度的影响较小,均可明显抑制溴酸盐的生成,且有机物的矿化效率随着臭氧投加量的增加而显著提高.

英文摘要：

Fe-Al supported on γ-Al2O3 （Fe-Al/Al2O3 ） was prepared via impregnation method followed by hydrolysis and hydrothermal treatment. Based on characterization of X-ray diffraction （ XRD ） and X - ray photoelectron spectroscopy （XPS） , Fe^3＋ and Fe^2＋ coexisted, in Fe-Al/Al2O3 while AI was in the state of Al2O3 and AIOOH. In comparison with ozonation alone, the addition of Fe-Al/Al2O3 resulted in complete inhibition of BrO_3^- formation with higher efficiency for catalytic ozonation of 2,4-dichlorophenoxyacetic acid （2,4-D）. Moreover, the catalyst could be reused for six times without significant loss of activity, indicating Fe-Al/Al2O3 has an excellent long-term stability. The effects of ozone dose and bromide concentration on TOC removal and bromate formation were also studied. The results showed that no significant bromate formation was found in catalytic ozonation process over FeAl/Al2O3 even with the increased ozone dose and bromide concentration, whereas the increase of ozone dose could result in higher TOC removal efficiency.