[Nature Catalysis] 我室熊海峰教授发表论文:Engineering catalyst supports to stabilize PdOx two-dimensional rafts for water-tolerant methane oxidation

发布日期:2021年10月21日   浏览次数:

我室熊海峰教授在 Nature Catalysis 上发表论文:Engineering catalyst supports to stabilize PdOx two-dimensional rafts for water-tolerant methane oxidation

摘要:The treatment of emissions from natural gas engines is an important area of research since methane is a potent greenhouse gas. The benchmark catalysts, based on Pd, still face challenges such as water poisoning and long-term stability. Here we report an approach for catalyst synthesis that relies on the trapping of metal single atoms on the support surface, in thermally stable form, to modify the nature of further deposited metal/metal oxide. By anchoring Pt ions on a catalyst support we can tailor the morphology of the deposited phase. In particular, two-dimensional (2D) rafts of PdOx are formed, resulting in higher reaction rates and improved water tolerance during methane oxidation. The results show that modifying the support by trapping single atoms could provide an important addition to the toolkit of catalyst designers for controlling the nucleation and growth of metal and metal oxide clusters in heterogeneous catalysts.

文章链接:https://www.nature.com/articles/s41929-021-00680-4