金原子簇催化碳-碳偶联反应的研究进展（英文）

发布时间：2018-08-05 10:22

【摘要】：近十几年来,金原子簇(尺寸1-2 nm)逐渐发展成为一种新型的纳米材料。特别在近几年中,金原子簇催化剂广泛地应用于纳米催化中,例如选择性氧化还原以及碳-碳偶联等反应。与传统的金纳米颗粒(2 nm)显著不同,金原子簇具有独特的电子性质和结构,能很好地关联金原子簇催化剂的结构与其催化性能,特别是对金原子簇的催化反应机理的研究。在本综述中,我们阐明了金原子簇催化剂在碳-碳偶联反应中的应用,其中包括Ullmann、Sonogashira、Suzuki和A~3-偶联等反应。并进一步揭示了金原子簇表面有机配体(例如芳香烃硫醇vs脂肪烃硫醇)对催化反应的影响,以及其它金属在金核内部的掺杂(例如铜、银、铂、钯等)改变原子簇的电子结构从而来调控其催化性能。最后,在原子层面上关联金原子簇结构和催化性能,并初步探讨催化反应机制。金原子簇催化剂的深入研究将为高效金纳米催化剂的设计提供一些建设性的思路和策略。
[Abstract]:In recent years, gold clusters (size 1-2 nm) have gradually developed into a new nano material. Especially in recent years gold cluster catalysts have been widely used in nanocatalysts such as selective redox and carbon-carbon coupling reactions. Different from the traditional gold nanoparticles (2 nm), gold clusters have unique electronic properties and structures, which can well correlate the structure of gold cluster catalysts with their catalytic properties, especially the mechanism of catalytic reaction of gold clusters. In this review, the applications of gold cluster catalysts in the carbon-carbon coupling reactions, including Ullmannn Sonogashirao Suzuki and AZ3- coupling reactions, have been clarified. The effects of organic ligands on the surface of gold clusters (such as aromatics mercaptan vs aliphatic mercaptan) on the catalytic reactions and the doping of other metals in the gold nuclei (such as copper, silver, platinum, etc.) were also revealed. Palladium) changes the electronic structure of the cluster to regulate its catalytic performance. Finally, the structure and catalytic properties of gold clusters are correlated at atomic level, and the mechanism of catalytic reaction is discussed. The further study of gold cluster catalysts will provide some constructive ideas and strategies for the design of high efficiency gold nanocatalysts.
【作者单位】：中国科学院大连化学物理研究所催化基础国家重点实验室;中国科学院大学;
【分类号】：O621.251

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