Advances of Single-Atomic Cobalt Catalysts in Liquid-Phase Selective Oxidative Reactions,Small Science

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Advances of Single-Atomic Cobalt Catalysts in Liquid-Phase Selective Oxidative Reactions
Small Science ( IF 11.1 ) Pub Date : 2023-10-26 , DOI: 10.1002/smsc.202300079
Jiaquan Li ₁ , Kai Wang ₂ , Yijiao Jiang ₃ , Jun Huang ₁ , Shaomin Liu ₂

Affiliation

Single-atom catalysts (SACs) composed of atomically dispersed metal-active sites embedded in supporting substrates are attracting increasing attention in liquid-phase selective oxidation reactions with joint merits of both advanced catalytic efficiency and high stability. Co-based SACs present superior performance in several model oxidative reactions against many other metals, thus they are recognized as a promising solution to the current high-cost noble-metal catalysts required for the synthesis of fine chemicals. In this review, the up-to-date research on the synthesized Co–SACs in selective oxidation applications is summarized. The strategies of the preparation of Co–SACs with diverse Co-loading levels and well-tuned morphologies and chemical structures are showcased, as well as the characterization techniques of the SACs. The applications of Co–SACs in a series of selective oxidation reactions and the influence of different oxidants on the overall reaction efficiency are discussed. In addition, the progress of the mechanism exploration involving active-site identification, catalytic activation of oxidants, and oxidation pathway elucidation is highlighted. Meanwhile, the existing challenges and the future efforts for the development of the Co–SAC reaction system in selective oxidation processes are outlined.

中文翻译：

单原子钴催化剂在液相选择性氧化反应中的研究进展

由嵌入支撑基底中的原子分散的金属活性位点组成的单原子催化剂（SAC）在液相选择性氧化反应中受到越来越多的关注，其兼具先进的催化效率和高稳定性的优点。钴基SAC在针对许多其他金属的几种模型氧化反应中表现出优异的性能，因此它们被认为是当前精细化学品合成所需的高成本贵金属催化剂的有前途的解决方案。在这篇综述中，总结了合成 Co-SAC 在选择性氧化应用中的最新研究。展示了具有不同共负载水平和精心调整的形貌和化学结构的 Co-SAC 的制备策略，以及 SAC 的表征技术。讨论了Co-SACs在一系列选择性氧化反应中的应用以及不同氧化剂对整体反应效率的影响。此外，还重点介绍了活性位点识别、氧化剂催化活化和氧化途径阐明等机制探索的进展。同时，概述了选择性氧化过程中Co-SAC反应体系的发展所面临的挑战和未来的努力。

更新日期：2023-10-26

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