| 简介 |
A catalyst for purifying exhaust gases includes a support including at least one composite selected from the group consisting of TiO2-Al2O3, ZrO2-Al2O3 and SiO2-Al2O3 composites, an NOx adsorbent including at least one member selected from the group consisting of alkali metals, alkaline-earth metals and rare-earth elements and loaded on the support, and a noble metal catalyst ingredient loaded on the support. The composites constituting the support improve initial NOx conversion of the catalyst, but also inhibit NOx purifying performance thereof from degrading even after a durability test. |
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