Strong metal-support interaction promoted scalable production of thermally stable single-atom catalysts

Single-atom catalysts (SACs) have demonstrated superior catalytic performance in numerous heterogeneous reactions. However, producing thermally stable SACs, especially in a simple and scalable way, remains a formidable challenge. Here, we report the synthesis of Ru SACs from commercial RuO(2) powder...

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Detalles Bibliográficos
Autores principales: Liu, Kaipeng, Zhao, Xintian, Ren, Guoqing, Yang, Tao, Ren, Yujing, Lee, Adam Fraser, Su, Yang, Pan, Xiaoli, Zhang, Jingcai, Chen, Zhiqiang, Yang, Jingyi, Liu, Xiaoyan, Zhou, Tong, Xi, Wei, Luo, Jun, Zeng, Chaobin, Matsumoto, Hiroaki, Liu, Wei, Jiang, Qike, Wilson, Karen, Wang, Aiqin, Qiao, Botao, Li, Weizhen, Zhang, Tao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7062790/
https://www.ncbi.nlm.nih.gov/pubmed/32152283
http://dx.doi.org/10.1038/s41467-020-14984-9
Descripción
Sumario:Single-atom catalysts (SACs) have demonstrated superior catalytic performance in numerous heterogeneous reactions. However, producing thermally stable SACs, especially in a simple and scalable way, remains a formidable challenge. Here, we report the synthesis of Ru SACs from commercial RuO(2) powders by physical mixing of sub-micron RuO(2) aggregates with a MgAl(1.2)Fe(0.8)O(4) spinel. Atomically dispersed Ru is confirmed by aberration-corrected scanning transmission electron microscopy and X-ray absorption spectroscopy. Detailed studies reveal that the dispersion process does not arise from a gas atom trapping mechanism, but rather from anti-Ostwald ripening promoted by a strong covalent metal-support interaction. This synthetic strategy is simple and amenable to the large-scale manufacture of thermally stable SACs for industrial applications.

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