Selective Catalytic Reduction of no by NH3 on Fe-ZSM-5 Elaborated from Different Methods
| Autor: | Delahay, Gerard, Guzman-Vargas, Ariel, Valade, David, Coq, Bernard |
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| Přispěvatelé: | Laboratoire de Matériaux Catalytiques et Catalyse en Chimie Organique (LMCCCO), Université Montpellier 1 (UM1)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: | |
| Zdroj: | Studies in Surface Science and Catalysis Studies in Surface Science and Catalysis, Elsevier, 2004, 154 C, pp.2501-2508. ⟨10.1016/S0167-2991(04)80516-0⟩ |
| ISSN: | 0167-2991 |
| DOI: | 10.1016/S0167-2991(04)80516-0⟩ |
| Popis: | International audience; Different methods of preparation have been used to introduce iron species in the zeolite ZSM-5. Special consideration has been devoted to the FeCl3 sublimation method. The various samples have been characterised by XRD and temperature programmed reduction. Two general types of species have been identified: iron oxide aggregates and iron cationic species. In the SCR of NO by NH3, Fe-ZSM-5 prepared from sublimation of FeCl3 displays the highest activity which is assumed to be related to the formation of iron-oxo complexes. The formation of these species is enhanced by a rapid washing of the preparation after the sublimation of FeCl3 following by a calcination with 5–10%O2 atmosphere. The SCR activity has been correlated with the activity in oxidising NO to NO2. |
| Databáze: | OpenAIRE |
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