Artículo
Characterization of Re-Mo/ZSM-5 Catalysts: How Re Improves the Performance of Mo in the Methane Dehydroaromatization Reaction
Autor/es | López Martín, Angeles María
Sini, M. F. Cutrufello, M. G. Caballero Martínez, Alfonso Colón, G. |
Departamento | Universidad de Sevilla. Departamento de Química Inorgánica |
Fecha de publicación | 2022 |
Fecha de depósito | 2024-02-01 |
Publicado en |
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Resumen | 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 ... 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. |
Agencias financiadoras | Ministerio de Economía y Competitividad (MINECO). España Junta de Andalucía |
Identificador del proyecto | ENE2017-88818-C2-1-R
CTQ2014-60524-R US-1263455 |
Cita | López Martín, A.M., Sini, M.F., Cutrufello, M.G., Caballero Martínez, A. y Colón, G. (2022). Characterization of Re-Mo/ZSM-5 Catalysts: How Re Improves the Performance of Mo in the Methane Dehydroaromatization Reaction. Applied Catalysis B: Environmental, 304, 120960. https://doi.org/10.1016/j.apcatb.2021.120960. |
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