| abstract |
(57) [PROBLEMS] To provide a novel catalyst for increasing the efficiency of a catalyst metal for reducing NOx in exhaust gas of an internal combustion engine. SOLUTION: A catalytically active amount of iridium, platinum, rhodium, palladium, silver, cobalt, copper, on and / or in carrier particles composed of a metal oxide and / or a composite oxide, An exhaust gas purifying catalyst comprising at least one element selected from the group consisting of nickel, iron, magnesium and lanthanide-based elements supported in a uniformly dispersed state. |