Effect of Cerium on Manganese Base Catalysts by Co-Preclpftation for Low-Temperature SCR of NO with NH_3

摘要

Catalysts of Mn/TiO_2 and Mn-Ce /TiO_2 prepared by co- precipitation method for low temperature selective catalytic reduction (SCR) of NO with NH_3 were investigated in this study. The experimental results showed that co-precipitation method after improvement, the NO conversion of Mn-Ce/TiO_2 catalyst increased sharply. Meanwhile, the addition of cerium has significant effects on the catalytic activity. Characterizations of catalysts were carried out by XRD, BET and H_2-TPR. The characterized results indicated that co-precipitation method after improvement, in temperature windows 150 to 300°C, showed higher NOx conversion.