| 摘要 |
<p>A process for the removal of nitrogen oxides from waste gases is provided using a two-stage catalytic reactor scheme where the molar ratio of ammonia to nitrogen oxides is greater than 1.3:1. The first stage uses an acid washed mordenite catalyst and the second stage uses a mordenite containing a metal selected from the group consisting of copper, manganese, iron, cobalt, chromium or a combination thereof.</p> |
