| Title | Selective removal of NO2 in the presence of oxygen and NO over Pd/SiO2 catalysts |
|---|---|
| Published in | Applied Catalysis B: Environmental, Vol. 50, p.143-151. ISSN 0926-3373. |
| Author | Li, Mingshi; Seshan, K.; Lefferts, Leon |
| Date | 2004 |
| Type | article |
| Publisher | Elsevier |
| Abstract | Catalytic reduction of NO2 in the presence of excess oxygen and NO has been studied over a 0.2% Pd/SiO2 catalyst between 120 and 260 °C. CO is effective in selective reduction of NO2 at temperatures below 180 °C. Temperature programmed desorption (TPD) and FT-IR studies have been used to investigate the adsorption sites during the reaction conditions. A Langmuir¿Hinshelwood mechanism involving oxidised Pd sites is proposed for the reduction of NO2 with CO, where both reactants adsorb competitively on Pd2+ sites. Cl deactivates the catalyst for the reduction of NO2 with CO. This problem can be overcome by using propylene as a co-reductant. Furthermore, addition of propylene widens the temperature window of operation. |
| Publication | http://purl.utwente.nl/publications/49070 |
| OpenURL | Search this publication in (your) library |
| Persistent Identifier | URN:NBN:NL:UI:28-49070 |
| Metadata | XML |
| Repository | University of Twente |
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