| 简介 |
An NOxstorage member including at least one member selected from the group consisting of alkali metals, alkaline-earth metals and rare-earth elements, and at least one noble metal selected from the group consisting of Pt, Pd and Rh are loaded on a support including a porous oxide including TiO2at least and ZrO2on which Rh is loaded in advance.
H2, which is generated by Rh/ZrO2, inhibits the sulfur poisoning, and the support, which includes TiO2at least, secures the initial NOxpurifying capability, thereby further inhibiting the sulfur poisoning. Accordingly, it is possible to inhibit the NOxstorage member from the sulfur poisoning, and to maintain a high NOxconversion even after a durability test. |
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