Preparation and performance of low temperature SCR catalyst on different Supports

Nitrogen oxides (NOX) are one of the main sources of pollution causing atmospheric pollution, and one of the main causes of acid rain and acid mist. In this paper, low temperature SCR catalysts were prepared by impregnation method. The preparation process and the denitrification rate are optimized by changing the ratio of manganese nitrate and lanthanum nitrate, calcination temperature, carrier, citric acid and the like. At the same time, the physical properties and structural characterization of the catalyst were carried out by SEM and BET. The results showed that the best support was ZSM-5, the loading amount was 14% manganese nitrate, 7% cerium nitrate, citric acid was 1 g, and the calcination temperature was 500 °C.