| 摘要 |
<p>The morphology of catalysts is demonstrated to have a significant effect on the durability of catalyst activity. Comparatively speaking, catalytic materials of larger median particle size appear and are believed to be more resistant to the masking and fouling effects of particulate material present in the air than catalytic materials of lower median particle size. The present application discloses a catalyst and a method of treating the atmosphere with an ozone decomposition composition of improved catalytic durability comprising contacting the atmosphere with a composition comprising a manganese oxide of median particle size diameter equal to or greater than about 2.0 micrometers.</p> |
