| abstract |
(57) [Summary] [Purpose] NO x , HC, C in exhaust gas from automobiles, etc. An exhaust gas purifying catalyst that efficiently purifies O, particularly HC, and has excellent durability. A composite oxide comprising cobalt and manganese and one or more precious metal elements of palladium, rhodium, iridium and platinum, wherein the manganese content is 2 to 10 at% in atomic ratio. Exhaust gas purification catalyst to be. |