分别采用氧化还原沉淀法和常规共沉淀法制备得到铁锰复合氧化物， 并对样品进行了 Ｘ射线衍射、 Ｂ Ｅ Ｔ比表面积、程序升温还原的初步表征和比较． 结果表明， 与常规共沉淀法制备的样品相比较， 采用氧化还原沉淀法制备的铁锰复合氧化物具有粒径较小、较大的比表面积、铁锰互溶性好、铁锰物种之间的相互作用较强等特点． 作为一种较为新颖的催化剂制备方法， 氧化还原沉淀法利用在高低价可变金属离子之间发生氧化还原反应的同时使之沉淀， 不利于各相单独形成微晶， 有利于不同金属离子的均匀混合． 此种方法对制备高比表面积、含变价过渡金属离子的各类复合氧化物催化剂有其独到之处． The Fe-Mn composite oxides were prepared by the methods of redox precipitation and conventional coprecipitation respectively. The samples were characterized by X-ray diffraction, B E T specific surface area and temperature programmed reduction. The results show that compared with the sample prepared by the conventional coprecipitation method, the iron-manganese composite oxide prepared by the redox precipitation method has the advantages of smaller particle size, larger specific surface area, good iron-manganese mutual solubility, Strong interaction and so on. As a relatively new catalyst preparation method, the redox precipitation method utilizes the redox reaction between the high and low variable metal ions to precipitate at the same time, which is not conducive to the formation of individual crystallites in each phase and is advantageous to the conversion of different metal ions Mix well. This method has its unique features for the preparation of various types of composite oxide catalysts with high specific surface area and containing transition metal ions with varying prices.