Artículo
Preferential oxidation of CO on a La-Co-Ru perovskite-type oxide catalyst
Autor/es | Pereñíguez Rodríguez, Rosa María
Caballero Martínez, Alfonso Ferri, Davide |
Departamento | Universidad de Sevilla. Departamento de Química Inorgánica |
Fecha de publicación | 2017 |
Fecha de depósito | 2022-10-27 |
Publicado en |
|
Resumen | A Ru-containing perovskite-type oxide La(Co,Ru)O3 of nominal composition LaCo0.8Ru0.2O3 was prepared by ultrasonic spray combustion and tested for the preferential oxidation of CO (PROX). EXAFS indicated that Ru adopted ... A Ru-containing perovskite-type oxide La(Co,Ru)O3 of nominal composition LaCo0.8Ru0.2O3 was prepared by ultrasonic spray combustion and tested for the preferential oxidation of CO (PROX). EXAFS indicated that Ru adopted the coordination environment of Co in LaCoO3 while Co was present as LaCoO3 and Co3O4. PROX activity was replaced by CO hydrogenation activity above 250 °C. Short oxidation at 500 °C between temperature programmed reaction ramps did not restore the initial La(Co,Ru)O3 structure but generated a catalyst with improved PROX activity compared to the initial La(Co,Ru)O3. Under reductive PROX conditions the material experienced structural changes that improved its overall catalytic activity only if the catalyst was oxidized after each temperature programmed ramp. |
Agencias financiadoras | Ministerio de Investigación, España Universidad de Sevilla |
Identificador del proyecto | Project CTQ2014-60524-R
Project nr. 200021_159568 |
Cita | Pereñíguez Rodríguez, R.M., Caballero Martínez, A. y Ferri, D. (2017). Preferential oxidation of CO on a La-Co-Ru perovskite-type oxide catalyst. Catalysis Communications, 92, 75-79. https://doi.org/10.1016/j.catcom.2016.12.020. |
Ficheros | Tamaño | Formato | Ver | Descripción |
---|---|---|---|---|
postPereñíguez-2017-Preferenti ... | 544.7Kb | [PDF] | Ver/ | |