| 摘要 |
PURPOSE:To obtain a catalyst reduced in thermal deterioration even when exposed to high temp. for a long time in an oxidative atmosphere by highly dispersing a noble metal component in the skeletal of multicomponent oxide having a perovskite type structure. CONSTITUTION:As a combustion catalyst, multicmponent oxide represented by a general formula LaAl1-xBxO3 (wherein 0.01<=x<1, La is lanthanum, Al is aluminum and B is platinum Pt or palladium Pd) is contained. This catalyst is constituted by highly dispersing a noble metal component in the skeletal of multicomponent oxide having a perovskity type structure. As a result, a catalyst extremely reduced in thermal deterioration even when exposed to high temp. of 800 deg.C or higher for a long time in an oxidative atmosphere is obtained and the temp. control mechanism of a catalytic combustion apparatus can be simplified to a large extent. |
