Metal micromonoliths for the cleaning of H2 by means of methanation reactions
| Autor: | O.H. Laguna, A. Muñoz-Murillo, L.F. Bobadilla, L.M. Martínez T., M. Montes, M.A. Centeno, J.A. Odriozola |
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| Rok vydání: | 2022 |
| Předmět: |
Materials science
02 engineering and technology General Chemistry engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis 0104 chemical sciences Metal Chemical engineering Coating Methanation visual_art visual_art.visual_art_medium engineering 0210 nano-technology Structured systems Space velocity |
| Zdroj: | Catalysis Today. 383:216-225 |
| ISSN: | 0920-5861 |
| DOI: | 10.1016/j.cattod.2021.04.026 |
| Popis: | The present manuscript presents for the first time the structuring of a Ru/TiO2 catalyst that was achieved by means of the washcoating procedure using homemade metal micromonoliths (Fecralloy®) of 1330 cpsi. For this, an optimized formulation of the slurried catalyst as well as a reproducible protocol for the coating of the micromonoliths were successfully achieved. The obtained structured systems were tested in the selective CO methanation reaction and the effect of different variables over the catalytic performance were analyzed such as the amount of loaded catalyst in the micromonoliths, the temperature of reaction, the space velocity, and the amount of CO and H2 within the feed-stream. The study of all of these parameters allowed to establish optimal conditions to maximize the performance of the structured Ru/TiO2 catalyst and subsequently, this was tested under those cited conditions in long-term tests (∼375 h), including shut-down/start-up cycles, aiming to evaluate its catalytic stability. The system presented a considerable stability along the different test without loss of catalytic activity, being specially remarkable its resistance to the inclusion of shut-down/start-up cycles. Therefore, this study lays the foundations for future development of more sophisticated structured systems for the selective CO methanation based on the structuring strategy proposed. |
| Databáze: | OpenAIRE |
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