The Multifaceted Reactivity of Single‐Atom Heterogeneous Catalysts,Angewandte Chemie International Edition

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The Multifaceted Reactivity of Single‐Atom Heterogeneous Catalysts
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-10-22 , DOI: 10.1002/anie.201806936
Sharon Mitchell ₁ , Evgeniya Vorobyeva ₁ , Javier Pérez‐Ramírez ₁

Affiliation

Single‐atom heterogeneous catalysts (SACs) attached to carefully chosen hosts are attracting considerable interest; principally because they offer maximum utilization per metal atom and are usually readily recyclable. However, diminution of the atomic population of nanoparticles or nanoclusters to single atoms can significantly alter reactivity because of the consequent changes in the active‐site structure. By examining various diverse applications, we ascertain whether the performance of SACs is enhanced or suppressed. We also note that SACs generally display unique kinds of catalytic cycles. The choice of host is crucial since it influences both the electronic and steric environment of the metal center. Moreover, it may function as a cocatalyst. All these aspects impact upon the design of new SACs, which exhibit similarities to hetero‐ and homogeneous predecessors. Additionally, SACs offer a viable replacement of soluble metal complexes in processes that remain difficult to heterogenize.

中文翻译：

单原子非均相催化剂的多方面反应性

连接到精心选择的主体上的单原子非均相催化剂（SAC）引起了人们的极大兴趣。主要是因为它们提供了每个金属原子最大的利用率，并且通常易于回收。但是，由于随之而来的活性位点结构的变化，将纳米粒子或纳米团簇的原子总数减少为单个原子会极大地改变反应性。通过检查各种不同的应用程序，我们确定SAC的性能是增强还是抑制。我们还注意到，SAC通常显示独特种类的催化循环。主机的选择至关重要，因为它会影响金属中心的电子和空间环境。此外，它可以充当助催化剂。所有这些方面都会影响新的SAC的设计，与异质和同质的前任相似。此外，SAC可在仍然难以异质化的过程中提供可溶性金属络合物的可行替代品。

更新日期：2018-10-22

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