Characterization and NH3-SCR reactivity of Cu-Fe-ZSM-5 catalysts prepared by solid state ion exchange: The metal exchange order effect
[EN] The selective catalytic reduction (SCR) of NO with NH3 in the presence of O-2 and H2O over a series of Fe and/or Cu-containing ZSM-5 catalysts prepared by solid state ion exchange (SSIE) was investigated. A wide number of experimental techniques (ICP-AES, XRD, HRTEM, Al-27 MAS NMR, NH3-TPD, DRS...
| Authors: | , , , , , , , |
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| Format: | article |
| Publication Date: | 2018 |
| Country: | España |
| Institution: | Universitat Politècnica de València (UPV) |
| Repository: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Language: | English |
| OAI Identifier: | oai:riunet.upv.es:10251/202108 |
| Online Access: | https://riunet.upv.es/handle/10251/202108 |
| Access Level: | Open access |
| Keyword: | Solid-state ion exchange Selective catalytic reduction (SCR) NO ZSM-5 |
| Summary: | [EN] The selective catalytic reduction (SCR) of NO with NH3 in the presence of O-2 and H2O over a series of Fe and/or Cu-containing ZSM-5 catalysts prepared by solid state ion exchange (SSIE) was investigated. A wide number of experimental techniques (ICP-AES, XRD, HRTEM, Al-27 MAS NMR, NH3-TPD, DRS UV-vis, HTTPR and EPR) have been applied to understand the metal exchange order effect on the composition, texture, structure, acidity and speciation of bimetallic materials. DRS UV-vis, H-2-TPR, EPR and HRTEM experiments conducted on Cu-Fe-ZSM5 and Fe-Cu-ZSM-5 allowed the identification of both isolated and clustered metal species differing in their amount, environment and degree of aggregation leading to a different catalytic behaviour of both catalysts. |
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