EXHAUST GAS PURIFYING CATALYST

摘要

Provided is an exhaust gas purifying catalyst which is suppressed in sintering of a noble metal and exhibits improved purification performance. The present invention provides an exhaust gas purifying catalyst which comprises a base and a catalyst coating layer that is provided on the base. The catalyst coating layer contains a noble metal that serves as an oxidation and/or reduction catalyst. The noble metal contains Rh-containing metal particles, in each of which rhodium (Rh) coexists with a base metal that is selected from among platinum group elements other than rhodium. The average content ratio of rhodium in the Rh-containing metal particles is 0.1-5 mol%, if the total amount of the base metal and the rhodium therein is taken as 100 mol%.