Surface Active Sites of Modified Zeolites and Zirconia in the Conversion of Nitrogen(I, II) Oxides
Samples of zirconia doped with transition metal (Cr, Co, Ce) oxides, and also rhodium-promoted and Fe-containing zeolites of different structural types, were studied by NH 3 -TPD and IR spectroscopy. The various samples were analyzed with respect to their catalytic performances in deNO x reactions,...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2007-02-01
|
| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/026361707781485771 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Samples of zirconia doped with transition metal (Cr, Co, Ce) oxides, and also rhodium-promoted and Fe-containing zeolites of different structural types, were studied by NH 3 -TPD and IR spectroscopy. The various samples were analyzed with respect to their catalytic performances in deNO x reactions, in particular the selective catalytic reduction of NO (N 2 O) using hydrocarbons as reducing agents (HC SCR). Bifunctional zeolite- and ZrO 2 -based catalysts exhibited high activity in the SCR of nitrogen(I, II) oxides to dinitrogen due to the combination of the surface redox and acidic properties exhibited by these materials. |
|---|---|
| ISSN: | 0263-6174 2048-4038 |