| abstract |
A highly functional and excellent exhaust gas purifying catalyst capable of efficiently decomposing and purifying suspended particulate matter contained in exhaust gas discharged from a diesel engine or the like at a lower temperature than before. I will provide a. In a catalyst for purifying exhaust gas containing floating particulate matter, which contains a composite oxide containing at least cerium and a metal containing silver or a compound thereof, the composite oxide contains cerium and Ln (Ln is And at least one element selected from the group consisting of lanthanum, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, ruthenium, yttrium and scandium. It is a complex oxide having a fluorite-type crystal structure. [Selection] Figure 5 |