Cu-Mn-Ce(CMC) ternary mixed oxides were prepared by the co-precipitation method with different precipitants

and evaluated in catalytic combustion of toluene. The catalyst prepared with NaOH(CMC-NaOH)exhibited the highest catalytic activity

followed by the catalyst prepared with NH3•H2O

K2CO3

and Na2C2O4. The precursors of hydroxide derived from NaOH had strong interaction

and Cu

Mn ions more easily entered the lattice of CeO2 fluorite structure to form CeO2 solid solution during calcination. As a result

the structure containing Cu-Mn mixed oxides and CeO2 solid solution enhanced the mobility of active oxygen owing to abundant defective sites on the surface

which benefited catalytic combustion of toluene.