Patent ID: 6159897
Filing Date: 2000-12-12
Classification: B01D,B01J,Y02T

Abstract:
A catalyst for purifying exhaust gases, comprising:a support comprising a TiO.sub.2 --Al.sub.2 O.sub.3 composite wherein the composite is at an atomic level;an NO.sub.x adsorbent including at least one member selected from the group consisting of alkali metals, alkaline-earth metals and rare-earth elements; and loaded on said support; anda noble metal catalyst ingredient loaded on said support,wherein said TiO.sub.2 --Al.sub.2 O.sub.3 composite satisfies the following compositing ratio, defined by moles of metallic components of TiO.sub.2 and Al.sub.2 O.sub.3, of TiO.sub.2 with respect to Al.sub.2 O.sub.3 ;Ti/Al=20/80 through 30/70.