Patent ID: 8071498

Claim:
An exhaust gas purifying catalyst, which inhibits coagulation of noble metal particles during gas purification, comprising: a combined oxide (A) containing a first oxide (A-1) containing an alkaline earth metal and/or a rare earth metal and an inorganic second oxide (A-2); and a noble metal (B) supported by the combined oxide (A), wherein a weight ratio of the noble metal (B) to the first oxide (A-1) containing the alkaline earth metal and/or the rare earth metal is from 1:90 to 1:200 so that the exhaust gas purifying catalyst inhibits coagulation of the noble metal particles during the gas purification; and the first oxide (A-1) containing the alkaline earth metal and/or the rare earth metal is selected from the group consisting of neodymium oxide, praseodymium oxide and a combination of both magnesium oxide and lanthanum oxide.