The Fe-modi fied sepiolite-supported Mn–Cu mixed oxide(Cux Mny/Fe-Sep) catalysts were prepared using the co-precipitation method.These materials were characterized by means of the XRD,N_2 adsorption–desorption,XPS,H_2-TPR,and O_2-TPD techniques,and their catalytic activities for CO and ethyl acetate oxidation were evaluated.The results show that catalytic activities of the Cux Mny/Fe-Sep samples were higher than those of the Cu1/Fe-Sep and Mn2/Fe-Sep samples,and the Mn/Cu molar ratio had a distinct in fluence on catalytic activity of the sample.Among the Cux Mny/Fe-Sep and Cu1Mn2/Sep samples,Cu1Mn2/Fe-Sep performed the best for CO and ethyl acetate oxidation,showing the highest reaction rate and the lowest T50 and T90 of 4.4×10~(-6) mmol·g-1·s-1,110,and 140 °C for CO oxidation,and 1.9×10~(-6) mmol·g-1·s-1,170,and210 °C for ethyl acetate oxidation,respectively.Moreover,the Cu1Mn2/Fe-Sep sample possessed the best lowtemperature reducibility and the lowest temperature of oxygen desorption as well as the highest surface Mn~(4+)/Mn~(3+) and Cu~(2+)/CuO atomic ratios.It is concluded that factors,such as the strong interaction between the Cu or Mn and the Fe-Sep support,good low-temperature reducibility,and good mobility of chemisorbed oxygen species,might account for the excellent catalytic activity of Cu1Mn2/Fe-Sep. The Fe-modi fied sepiolite-supported Mn-Cu mixed oxide (Cux Mny / Fe-Sep) catalysts were prepared using the co-precipitation method. These materials are characterized by means of the XRD, N_2 adsorption- desorption, XPS, TPR, and O_2-TPD techniques, and their catalytic activities for CO and ethyl acetate oxidation were the same. The results show that catalytic activities of the Cux Mny / Fe-Sep samples were higher than those of the Cu1 / Fe-Sep and Mn2 / Fe-Sep samples, and the Mn / Cu molar ratio had a distinct in fluence on catalytic activity of the sample. Among the Cux Mny / Fe-Sep and Cu1Mn2 / Sep samples, Cu1Mn2 / Fe-Sep performed the best for CO and ethyl acetate oxidation showed the highest reaction rate and the lowest T50 and T90 of 4.4 × 10 -6 mmol · g -1 · s -1,110 and 140 ° C for CO oxidation and 1.9 × 10 -6 mmol · g-1 · s-1,170, and 210 ° C for ethyl acetate oxidation, respectively. More over, the Cu1Mn2 / Fe-Sep sample the best low temperature degradation and the lowest temperature of oxyge n desorption as well as the highest surface Mn ~ (4 +) / Mn ~ (3+) and Cu ~ (2 +) / CuO atomic ratios. It is concluded that factors such as the strong interaction between the Cu or Mn and the Fe-Sep support, good low-temperature reducibility, and good mobility of chemisorbed oxygen species, might account for the excellent catalytic activity of Cu1Mn2 / Fe-Sep.