Abstract Nitrogen and oxygen compounds, as one of the main pollutants in the atmosphere, is caused by acid rain and photochemical nitrogen oxygen compounds, as one of the main pollutants in the atmosphere is an important factor in causing acid rain and photochemical smog pollution phenomenon。 Selective catalytic reduction reaction is the most commonly used method for the removal of nitrogen oxides, and is also the most mature and economical method for the removal of nitrogen and oxygen compounds。 Currently most commonly used for SCR denitration catalysts for vanadium SCR denitration catalysts, but this kind of catalyst exist activity scope is small, easy to be in the flue gas SO2 poisoning caused by, catalyst performance decline, reduce the catalyst life。 Therefore, the development of a new efficient and environment friendly catalyst attracted widespread attention。
Carrier is an important part of selective catalytic reduction denitrification catalyst, so the performance of carrier will on the catalyst performance and lifetime have very important influence。 The commonly used catalyst for the single metal oxide carrier, but single metal oxide support in improving the catalytic performance at the same time, also has its own a variety of defects, in recent studies found that multi carrier to improve catalyst performance at the same time, to make up for the defects of the single metal oxide, so multiple composite oxides as catalyst carrier research becomes very meaningful。 Active ingredient is another important part of the SCR denitration catalysts, the active ingredients can directly affect the catalytic efficiency of stock, will also affect the catalytic anti toxic properties, therefore the study of load in the active ingredient of multi-element composite carrier effect on the performance of the catalyst is also very important。
In this paper, the catalyst support was prepared by mechanical mixing method, and the active material was loaded on the carrier by impregnation method。 This paper is the carrier of alumina and titania with different mass ratio, active ingredients of cerium oxide and vanadium oxide。 XRD and other means were used to characterize the catalyst and to understand the performance of the catalyst。 Through comparing the performance of different mass ratios of the carrier and the active material, the best carrier mass ratio and the active component loading capacity of the catalyst were explored。