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| Pàgina inicial > Articles > Articles publicats > Ni-Ru supported on CeO2 obtained by mechanochemical milling for catalytic hydrogen production from ammonia |
| Data: | 2024 |
| Resum: | Developing active and stable catalysts for carbon-free hydrogen production is crucial to mitigate the effects of climate change. Ammonia is a promising carbon-free hydrogen source, as it has a high hydrogen content and is liquid at low pressure, which allows its easy storage and transportation. We have recently developed a nickel-based catalyst with a small content of ruthenium supported on cerium oxide, which exhibits high activity and stability in ammonia decomposition. Here, we investigate mechanochemical milling for its synthesis, a faster and less energy-consuming technique than conventional ones. Results indicate that mechanochemical synthesis increases catalytic activity compared to the conventional incipient wetness impregnation method. The interaction between the metal precursors and the support is key in fine-tuning catalytic activity, which increases linearly with oxygen vacancies in the support. Moreover, the mechanochemical method modifies the oxidation state of Ni and Ru species, with a variation depending on the precursors. |
| Ajuts: | Agencia Estatal de Investigación PID2021-124572OB-C31 Agencia Estatal de Investigación PID2021-124572OB-C33 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-01061 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00457 Agencia Estatal de Investigación CEX2021-001214-S Agencia Estatal de Investigación RYC2021-033479-I |
| Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. |
| Llengua: | Anglès |
| Document: | Article ; recerca ; Versió publicada |
| Publicat a: | iScience, Vol. 27, Issue 6 (June 2024) , art. 110028, ISSN 2589-0042 |
21 p, 6.5 MB |