| abstract |
The invention provides a catalyst for purifying fuel tail gas particles and harmful gases and a preparation method thereof, belonging to the technical field of catalyst preparation. The catalyst has an ABO 3 structure, wherein A is Ce 1‑x Sr x , B is Mn 1‑y Pdy , 0≤X is less than or equal to 0.5, 0.1≤Y is less than or equal to 0.3, and its preparation method includes: firstly Weigh the relevant raw materials to dissolve, and add citric acid after stirring and mixing to obtain a mixed solution; then keep a certain temperature and stir the mixed solution to form a dry gel, and place it in an electric heating blast drying box to dry to achieve Complete dehydration to obtain semi-finished products; finally, it is placed in a muffle furnace for calcination to obtain a catalyst. The catalyst of the invention can simultaneously catalyze the removal of CO, NOx, CxHy (hydrocarbon), PM (soot particulate matter) and other components in the exhaust gas, thereby improving the conversion rate and removal rate of each polluting gas. |