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用溶胶凝胶法制备了尖晶石型Ｃｏ２ＭｎＯ４超细粒子，用ＤＴＡＴＧ，ＸＲＤ，ＴＥＭ，ＦＴＩＲ等手段研究了Ｃｏ２ＭｎＯ４超细粒子的形成过程，进而用反应评价结合ＸＲＤ，ＸＰＳ，ＢＥＴ比表面积测试研究了Ｃｏ２ＭｎＯ４催化剂的比表面积和表面结构与其ＦＴ反应性能间的关系．结果表明，Ｃｏ２ＭｎＯ４超细粒子可以在较低温度（２５０～３５０℃）下形成，并具有粒度小，分布均匀等特点．用该法制备的超细粒子Ｃｏ２ＭｎＯ４，其催化活性明显优于相同组成的大颗粒催化剂．
The spinel Co2MnO4 ultrafine particles were prepared by sol-gel method. The formation process of Co2MnO4 ultrafine particles was studied by means of DTA-TG, XRD, TEM and FT-IR. Then the reaction was evaluated by XRD, XPS, BET specific surface area of the Co2MnO4 catalyst was studied the specific surface area and surface structure and its F T reaction between the relationship. The results show that Co2MnO4 ultrafine particles can be formed at lower temperature (250 ~ 350 ℃), and have the characteristics of small particle size and uniform distribution. The prepared ultrafine particles Co2MnO4, its catalytic activity was significantly better than the same composition of large particle catalyst.