异相催化中金属纳米物种的稳定性影响因素研究进展

Catalytic stability studies on metal nanospecies in heterogeneous catalysis

含有金属纳米物种的固态催化剂作为重要的催化材料,在催化加氢和催化氧化等多种异相催化反应中发挥了至关重要的作用。在这些催化转化过程中,高温、过电位和光照等苛刻条件下易造成金属纳米物种的聚集或烧结,从而导致催化反应的失活和选择性的下降。因此,提高金属纳米物种在苛刻反应条件下的稳定性是当前亟待解决的问题之一。概述了异相催化中金属纳米物种的稳定性影响因素,以便为后续设计更高稳定性的活性金属物种奠定基础。

The presence of metal nanospecies in solid catalysts makes them crucial for various heterogeneous catalytic reactions, including catalytic hydrogenation and catalytic oxidation.In these catalytic conversion processes, the harsh conditions of high temperature, overpotential, and intense light can easily induce the aggregation or sintering of metal nanospecies, thereby resulting in catalyst deactivation and reduced selectivity.Therefore, enhancing the stability of metal nanospecies in adverse reaction conditions was a pressing issue that requires immediate attention.The focuses of this review included the factors affecting on the stability of metal nanospecies in heterogeneous catalysis, which lays a foundation for the subsequent design of life-extending active metal species.