Liu Huimin, Shi Lizi, Zhang Qijian, Qi Ping, Zhao Yonghua, Meng Qingrun, Feng Xiaoqian, Wang Huan, Ye Jinhua
School of Chemical and Environmental Engineering, Liaoning University of Technology, Jinzhou 121001, China.
Chem Commun (Camb). 2021 Feb 7;57(11):1279-1294. doi: 10.1039/d0cc07144g. Epub 2021 Feb 1.
Hydrogenation reactions are an important process in today's chemical industry. Typically, hydrogenation reactions involve the removal of an unsaturated bond in olefins or other polyenes via thermal catalysis using hydrogen. As hydrogenation reactions are often carried out at temperatures up to several hundred degrees, they require significant energy input which typically comes from burning fossil fuels. In order to conserve fossil fuels and reduce CO emissions, researchers are now developing photothermal catalysts for hydrogenation reactions, which harness concentrated sunlight to achieve the required reaction temperatures or introduce sunlight into thermal-driven reaction systems to reduce the reaction temperatures. Photothermal catalysts thus need to be able to efficiently absorb sunlight, whilst also being able to drive the desired hydrogenation reaction with high activity and selectivity. In this review, we summarize recent research aimed at the development of photothermal catalysts for CO/CO hydrogenation and alkene/alkyne/aromatic hydrogenation. Particular emphasis is placed on uncovering the reaction mechanisms at the molecular level, which in turn guides the rational design of photothermal catalysts with better performance.
氢化反应是当今化学工业中的一个重要过程。通常，氢化反应涉及通过使用氢气的热催化作用去除烯烃或其他多烯中的不饱和键。由于氢化反应通常在高达数百摄氏度的温度下进行，它们需要大量的能量输入，而这些能量通常来自燃烧化石燃料。为了节约化石燃料并减少一氧化碳排放，研究人员目前正在开发用于氢化反应的光热催化剂，这种催化剂利用聚光阳光来达到所需的反应温度，或者将阳光引入热驱动反应体系以降低反应温度。因此，光热催化剂需要能够高效吸收阳光，同时还能够以高活性和选择性驱动所需的氢化反应。在这篇综述中，我们总结了近期旨在开发用于一氧化碳/一氧化碳加氢和烯烃/炔烃/芳烃加氢的光热催化剂的研究。特别强调在分子水平上揭示反应机理，这反过来又指导了具有更好性能的光热催化剂的合理设计。
