EXHAUST GAS PURIFICATION CATALYST AND PROCESS FOR PRODUCING SAME

摘要

Disclosed is an exhaust gas purification catalyst (1) comprising noble metal particles (6); a first compound (7) which has the noble metal particles (6) supported thereon; and a second compound (9) which is arranged so as not to contact with the noble metal particles (6) and has an oxygen-absorbing ability. In the exhaust gas purification catalyst (1), the average distance between the first compound (7) and the second compound (9) is 5 to 300 nm.