Composite oxidant SCR (Selective Catalytic Reduction) denitrating catalyst, preparation method and applications thereof

The invention discloses a composite oxidant SCR (Selective Catalytic Reduction) denitrating catalyst for warm fume in boilers, a preparation method and application thereof. The catalyst comprises the components of transition metal element M and Ti element. As counted by the oxidant, the amount of the transition metal element M accounts for 6.8-20wt% of the total weight of the catalyst. As counted by TiO2, the amount of Ti accounts for 80-93.2wt% of the total weight of the catalyst. Compared with the widely used commercial catalyst, the catalyst decreases the cost by more than 20%, does not contain W, Mo, V and Ce, and has the advantages of low cost, no toxicity, high activity, good sulphate resisting property and the like.