抗烧结的超稳定型单原子催化剂研究进展

传统的负载型金属催化剂在高温环境下或长时间工作后易发生烧结。这种不可逆的过程会导致催化剂活性位点的显著减少,使得催化剂严重失活。因此往往需要将催化剂及时更新才能满足工业生产需求,然而这会极大增加生产成本。与传统的负载型金属催化剂不同,单原子催化剂(Single-atom catalysts,SACs)的中心金属原子可以与杂原子(N、O、S等)形成强键合作用,从而有效抑制金属烧结。基于单原子催化剂的这种特性,我们可以制备抗烧结、耐高温的超稳定型单原子催化剂来应对特殊的工业催化环境。本文总结了近年来抗烧结的超稳定型单原子催化剂的合成与应用进展,为单原子催化领域的研究提供参考。

Progress in Ultra-Stable Single-Atom Catalysts with Sintering Resistance

Traditional supported metal catalysts are prone to sintering under high temperature environments or after long hours of work. This irreversible process will result in a significant reduction of the active sites of the catalysts, which will cause the catalysts to be severely deactivated. Therefore, it is often necessary to update the catalysts in time to meet the needs of industrial production. But this will greatly increase production costs. Unlike traditional supported metal catalysts, the central metal atom of single-atom catalysts (SACs) can form strong bonds with heteroatoms (N, O, S, etc.), thereby effectively inhibiting metal sintering. Based on this characteristic of single-atom catalysts, we can prepare ultra-stable single-atom catalysts that are resistant to sintering at high temperatures to deal with special industrial catalytic environments. This paper summarizes the progress in the synthesis and application of sintering-resistant and ultra-stable single-atom catalysts in recent years, and provides references for the research in the field of single-atom catalysis.