Promoting effect of La_2O_3 and Nd_2O_3 on PdO/Al_2O_3 for NO reduction with CH_4

摘要

The promoting effect of La_2O_3 and Nd_2O_3 addition on the catalytic activity of PdO/Al_2O_3 for the NO reduction with CH_4 was studied in the absence of O_2.The addition of La_2O_3 and Nd_2O_3 to PdO/Al_2O_3 is due to promoting the NO reduction to N_2 and preventing the formation of HCN,NH_3,N_2O and carbons.It has been significantly observed by XRD that hydrogen-loaded Pd was formed.The La_2O_3 and Nd_2O_3-added PdO/Al_2O_3 catalysts were characterized by CH_4-TPSR and NO reduction in the mixed stream of NO and CH_4.