Characterization of Re-Mo/ZSM-5 Catalysts: How Re Improves the Performance of Mo in the Methane Dehydroaromatization Reaction
In this study, the promoting effect of rhenium addition as a co-dopant on Mo/ZSM-5 catalysts system has been analysed. Hence, bimetallic (Re-Mo/ZSM-5) catalysts have been synthesized using a sequential impregnation methodology. The catalytic performance for direct aromatization of methane reaction h...
| Autores: | ; ; ; ; |
|---|---|
| Tipo de documento: | Artigo |
| Estado: | Accepted version |
| Data de publicação: | 2022 |
| País: | España |
| Recursos: | Universidad de Sevilla (US) |
| Repositório: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/154444 |
| Acesso em linha: | https://hdl.handle.net/11441/154444 https://doi.org/10.1016/j.apcatb.2021.120960 |
| Nível de acesso: | Acesso aberto |
| Palavra-chave: | Bimetallic Methane dehydroaromatization Molybdenum Rhenium |
| _version_ | 1878737448913076224 |
|---|---|
| author | López Martín, Ángeles |
| author2 | Sini, M. F. Cutrufello, M. G. Caballero Martínez, Alfonso Colón, G. |
| author2_role | author author author author |
| author_browse | Caballero Martínez, Alfonso Colón, G. Cutrufello, M. G. López Martín, Ángeles Sini, M. F. |
| author_facet | López Martín, Ángeles Sini, M. F. Cutrufello, M. G. Caballero Martínez, Alfonso Colón, G. |
| author_role | author |
| collection | idUS. Depósito de Investigación de la Universidad de Sevilla |
| description | In this study, the promoting effect of rhenium addition as a co-dopant on Mo/ZSM-5 catalysts system has been analysed. Hence, bimetallic (Re-Mo/ZSM-5) catalysts have been synthesized using a sequential impregnation methodology. The catalytic performance for direct aromatization of methane reaction has been determined and correlated with their physical and chemical state combining multiple characterization techniques. An important synergy between Mo and Re, affected by the sequential impregnation, has been observed. Thus, Re1-Mo4/ZSM-5 in which Re has been incorporated first shows notably higher aromatic yields and stability against deactivation. Characterization results suggest that catalytic enhancement is due to the important effect of Re presence in close interaction with Mo. Improved evolution of ethane through C-C coupling would be correlated to this catalytic performance. As we discuss, Mo nature and location in the bimetallic systems are strongly conditioned by Re and the impregnation sequence and favours such intermediate step. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_9ffd2b2537e3ed8df3c97c12fd7b4a7b |
| institution | Universidad de Sevilla (US) |
| instname_str | Universidad de Sevilla (US) |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:idus.us.es:11441/154444 |
| publishDate | 2022 |
| publishDateSort | 2022 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| reponame_str | idUS. Depósito de Investigación de la Universidad de Sevilla |
| spelling | Characterization of Re-Mo/ZSM-5 Catalysts: How Re Improves the Performance of Mo in the Methane Dehydroaromatization Reaction López Martín, Ángeles Sini, M. F. Cutrufello, M. G. Caballero Martínez, Alfonso Colón, G. Bimetallic Methane dehydroaromatization Molybdenum Rhenium In this study, the promoting effect of rhenium addition as a co-dopant on Mo/ZSM-5 catalysts system has been analysed. Hence, bimetallic (Re-Mo/ZSM-5) catalysts have been synthesized using a sequential impregnation methodology. The catalytic performance for direct aromatization of methane reaction has been determined and correlated with their physical and chemical state combining multiple characterization techniques. An important synergy between Mo and Re, affected by the sequential impregnation, has been observed. Thus, Re1-Mo4/ZSM-5 in which Re has been incorporated first shows notably higher aromatic yields and stability against deactivation. Characterization results suggest that catalytic enhancement is due to the important effect of Re presence in close interaction with Mo. Improved evolution of ethane through C-C coupling would be correlated to this catalytic performance. As we discuss, Mo nature and location in the bimetallic systems are strongly conditioned by Re and the impregnation sequence and favours such intermediate step. Ministerio de Economía y Competitividad ENE2017-88818-C2-1-R, CTQ2014-60524-R Junta de Andalucía US-1263455 Elsevier https://hdl.handle.net/11441/154444 https://doi.org/10.1016/j.apcatb.2021.120960 |
| spellingShingle | Characterization of Re-Mo/ZSM-5 Catalysts: How Re Improves the Performance of Mo in the Methane Dehydroaromatization Reaction López Martín, Ángeles Bimetallic Methane dehydroaromatization Molybdenum Rhenium |
| status_str | acceptedVersion |
| title | Characterization of Re-Mo/ZSM-5 Catalysts: How Re Improves the Performance of Mo in the Methane Dehydroaromatization Reaction |
| title_full | Characterization of Re-Mo/ZSM-5 Catalysts: How Re Improves the Performance of Mo in the Methane Dehydroaromatization Reaction |
| title_fullStr | Characterization of Re-Mo/ZSM-5 Catalysts: How Re Improves the Performance of Mo in the Methane Dehydroaromatization Reaction |
| title_full_unstemmed | Characterization of Re-Mo/ZSM-5 Catalysts: How Re Improves the Performance of Mo in the Methane Dehydroaromatization Reaction |
| title_short | Characterization of Re-Mo/ZSM-5 Catalysts: How Re Improves the Performance of Mo in the Methane Dehydroaromatization Reaction |
| title_sort | Characterization of Re-Mo/ZSM-5 Catalysts: How Re Improves the Performance of Mo in the Methane Dehydroaromatization Reaction |
| topic | Bimetallic Methane dehydroaromatization Molybdenum Rhenium |
| topic_facet | Bimetallic Methane dehydroaromatization Molybdenum Rhenium |
| url | https://hdl.handle.net/11441/154444 https://doi.org/10.1016/j.apcatb.2021.120960 |