【摘要】 在化学气氛/热诱导下，多相催化材料金属结构活性中心可进行复杂的动态演化，在此过程中，载体对稳定金属迁移中间体发挥了巨大的作用，其决定金属的烧结、稳定或再分散。惰性载体、金属氧化物以及复合载体的配位不饱和位点，在特定的条件下能够实现金属的稳定或再分散，从而抑制金属烧结。在实际工况下，金属的自发迁移行为在优化金属活性中心的结构、构筑新活性位上起关键作用。采取金属结构动态演化策略，能大幅提高催化材料的活性和寿命，为理性设计稳定、高效的多相催化材料提供借鉴。更多还原

【Abstract】 Metal species in heterogeneous catalysts undergo complex dynamic structural evolution when they are exposed to reactive gases or thermal conditions at elevated temperatures. In this process, the support of catalysts plays a crucial role in stabilizing metal intermediates during their migration, which would directly determine the way of metal species of sintering, stabilization, or redispersion. Under specific circumstances, the coordination-unsaturated sites on the inert supports, metal oxides, and hybrid supports can anchor metal atoms or clusters, enabling stabilization or redispersion that could overcome the thermodynamic drive toward sintering. Particularly in operating conditions, the spontaneous migration behavior of the metal species plays a key role in optimizing the structure of metal active sites or constructing new active sites on the catalyst. This strategy on the basis of dynamic metal structural evolution can significantly enhance the catalytic activity and durability of catalysts, which provides valuable insights for the rational design of stable and efficient candidates for catalysis.更多还原