| 摘要 |
<p>A catalyst body having a carrier and, carried thereon, a catalytic material containing an alkali metal and/or an alkaline earth metal which are used as an NOx absorption catalyst for the clarification of an automobile exhaust gas or the like, characterized in that alumina is arranged in the carrier or between the carrier and the catalytic material. The catalyst body is inhibited with respect to the deterioration of the carrier by a metal such as Li, Na, K and Ca used as the alkali metal and/or an alkaline earth metal, and thus can be used for a long period of time.</p> |
