| 摘要 |
<p>An oxide carrier, which is a component of a catalytic coat layer, contains 30 mass% or more of CeO 2 , and the catalytic coat layer carries 0.3 mol or more of kalium per liter of a carrier base. A synergistic effect of CeO 2 and kalium is exhibited and the performance in storing NOx and SOx in a low-temperature region is improved.</p> |
