Two kinds of catalyst for selective catalyst reduction(SCR) denitrification has been prepared by using the distributed macer- ation method

they take anatase type nano-scale grade TiO_2 and commercial grade TiO_2 as carrier respectively

to carry V_2O_5 and WO_3.In a fixed bed reactor

the influence of different carrier upon the denitrification performance of the catalyst has been studied un- der identical conditions

and the micro-structure of catalyst being investigated through methods of specific surface area determina- tion

X-ray diffraction

and scanning electron microscopy etc..Results of test show that the catalyst taking nano-scale grade TiO_2 as carrier has better performance.