Molybdenum complexes are versatile and efficient for liquid phase olefin epoxidation reactions. Rational design of catalysts is critical to achieve high atom efficiency during epoxidation processes. Although liquid phase epoxidation has been a popular topic for decades, three key issues, (a) rational control of morphology of molybdenum nanoparticles, (b) manipulating metal‐support interaction and (c) altering electronic configuration at molybdenum center remains unsolved in this area. Therefore, in this paper, we have critically revised recent research progress on heterogeneous molybdenum catalysts for facile liquid phase olefin epoxidation in terms of catalyst synthesis, surface characterization, catalytic performance and structure‐function relationship. Furthermore, plausible reaction mechanisms will be systematically discussed with the aim to provide insights into fundamental understanding on novel epoxidation chemistry.

中文翻译：

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均相钼催化剂上轻烯烃液相催化环氧化的新进展

钼配合物对于液相烯烃环氧化反应是通用的和有效的。催化剂的合理设计对于在环氧化过程中实现高原子效率至关重要。尽管数十年来液相环氧化一直是一个热门话题，但该领域仍未解决三个关键问题：（a）合理控制钼纳米颗粒的形态，（b）操纵金属与载体的相互作用以及（c）改变钼中心的电子构型。因此，在本文中，我们从催化剂合成，表面表征，催化性能和结构-功能关系等方面，对可用于液相烯烃环氧化的非均相钼催化剂的最新研究进展进行了重大修订。此外，