EXHAUST GAS PURIFYING APPARATUS

摘要

Disclosed is an exhaust gas purifying apparatus which comprises an oxidation catalyst wherein metal oxide fine particles having an average primary particle diameter of 1-400 nm are arranged on a catalyst metal support composed of at least one first metal selected from the group consisting of Ag, Pt, Rh, Pd, Ru, Ir, Os, Au and Cu. The metal oxide fine particles are composed of an oxide of a second metal of variable valence. This exhaust gas purifying apparatus is characterized in that a particulate matter in an exhaust gas is oxidized on the metal oxide fine particles.