Refinement of selective hydrogenation catalysts guided by the concept of ‘group recognition’

Selective hydrogenation is crucial in the production of high-value chemicals, yet its efficient implementation remains challenging due to the absence of clear catalyst regulation strategies and in-depth insights into catalytic mechanisms. This paper discusses several feasible solutions for achieving efficient selective hydrogenation by adjusting the fine structure of catalysts drawing from our successful examples in recent work. Building upon a deep understanding of the fundamental principles of heterogeneous catalysis, structure-performance relations, and insights gleaned from our previous achievements, we identify 'group recognition' as the central mechanism for achieving efficient selective hydrogenation. Our catalyst design strategies revolve around three key aspects: adjusting geometric structure, controlling electronic structure, and regulating the local domain of active sites. Furthermore, we present the latest advancements in decoupling the geometric and electronic effects, addressing the longstanding challenge of disentangling these intertwined factors. It is our conviction that this paper offers valuable experience and innovative ideas for realizing efficient selective hydrogenation.