Preparation of Ag-CeO2-LSCF composite catalyst and its catalytic performance for soot

In this paper, La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) perovskite catalyst was prepared and compounded with Ag and CeO2 by impregnation method to synthesize Ag-CeO2-LSCF(A-C-L) composite catalyst. The change of catalytic soot performance of LSCF catalyst before and after composite was studied. The results show that the microstructure of A-C-L composite catalyst is good, and the characteristic temperature values of soot are 344.0 degrees C, 394.8 degrees C and 445.1 degrees C, respectively, which are 56.9 degrees C, 56.5 degrees C and 51.5 degrees C lower than those of LSCF. When the content of Ag is 8 wt%, the catalytic performance of A-C-L composite catalyst is the best.