Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201800, China.
Nat Commun. 2023 Feb 27;14(1):1123. doi: 10.1038/s41467-023-36640-8.
Subnanometric Cu clusters that contain only a small number of atoms exhibit unique and, often, unexpected catalytic behaviors compared with Cu nanoparticles and single atoms. However, due to the high mobility of Cu species, scalable synthesis of stable Cu clusters is still a major challenge. Herein, we report a facile and practical approach for scalable synthesis of stable supported Cu cluster catalysts. This method involves the atomic diffusion of Cu from the supported Cu nanoparticles to CeO at a low temperature of 200 °C to form stable Cu clusters with tailored sizes. Strikingly, these Cu clusters exhibit high yield of intermediate product (95%) in consecutive hydrogenation reactions due to their balanced adsorption of the intermediate product and dissociation of H. The scalable synthesis strategy reported here makes the stable Cu cluster catalysts one step closer to practical semi-hydrogenation applications.
与铜纳米粒子和单原子相比，仅包含少量原子的亚纳米级铜团簇表现出独特的、常常是出人意料的催化行为。然而，由于铜物种的高迁移率，可扩展合成稳定的铜团簇仍然是一个主要挑战。在此，我们报告了一种用于可扩展合成稳定负载型铜团簇催化剂的简便实用方法。该方法涉及在 200°C 的低温下，通过原子扩散将 Cu 从负载型 Cu 纳米粒子转移到 CeO 上，从而形成具有定制尺寸的稳定铜团簇。引人注目的是，由于对中间产物的吸附平衡和 H 的离解，这些铜团簇在连续加氢反应中表现出高的中间产物收率（95%）。这里报道的可扩展合成策略使稳定的铜团簇催化剂更接近于实际的半氢化应用。
