Atomically dispersed metal catalysts (ADCs), as an emerging class of heterogeneous catalysts, have been widely investigated during the past two decades. The atomic dispersion nature of the catalytic metal centers makes them an ideal system for bridging homogeneous and heterogeneous metal catalysts. The recent rapid development of new synthetic strategies has led to the explosive growth of ADCs with a wide spectrum of metal atoms dispersed on supports of different chemical compositions and natures. The availability of diverse ADCs creates a powerful materials platform for investigating mechanisms of complicated heterogeneous catalysis at the atomic levels. Considering most dispersed metal atoms on ADCs are coordinated by the donors from supports, this review will demonstrate how the surface coordination chemistry plays an important role in determining the catalytic performance of ADCs. This review will start from the link between coordination chemistry and heterogeneous catalysis. After the brief description on the advantages and limitations of common structure characterization methods in determining the coordination structure of ADCs, the surface coordination chemistry of ADCs on different types of supports will be discussed. We will mainly illustrate how the local and vicinal coordination species on different support systems act together with the dispersed catalytic metal center to determine the catalytic activity, selectivity, and stability of ADCs. The dynamic coordination structure change of ADCs in catalysis will be highlighted. At the end of the review, personal perspectives on the further development of the field of ADCs will be provided.

中文翻译：

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原子分散金属催化剂的表面配位化学。

在过去的二十年中，作为一种新兴的非均相催化剂，原子分散的金属催化剂（ADC）已经得到了广泛的研究。催化金属中心的原子分散性质使它们成为桥接均相和非均相金属催化剂的理想系统。新合成策略的最新快速发展导致ADC的爆炸式增长，其广泛的金属原子分散在不同化学成分和性质的载体上。各种ADC的可用性为研究原子级复杂的多相催化机理创造了强大的材料平台。考虑到ADC上大多数分散的金属原子是由载体的供体协调的，这篇综述将证明表面配位化学在决定ADC催化性能方面如何发挥重要作用。本文将从配位化学与多相催化之间的联系开始。在简要介绍了通用结构表征方法在确定ADC配位结构方面的优势和局限性之后，将讨论ADC在不同类型载体上的表面配位化学。我们将主要说明不同支持系统上的局部和邻位配位物种如何与分散的催化金属中心一起起作用，以确定ADC的催化活性，选择性和稳定性。将重点介绍催化作用下ADC的动态配位结构变化。在审查结束时，