In‐Depth Knowledge of Strong Metal‐Support Interaction Effect in Heterogeneous Catalysis

ABSTRACT Strong metal‐support interaction (SMSI) in heterogeneous catalysts has received extensive attention because of its profound impact on interfacial stability and catalytic performance. With the rapid development of advanced characterization techniques and accurate theoretical calculations, remarkable progress has been achieved in elucidating the intrinsic nature of SMSI and in the rational reverse design of novel catalyst architectures. SMSI is characterized by several distinctive features, including the formation of protective encapsulation layers, significant electron transfer across the interface, and dynamic redispersion of metal species. Furthermore, strategies for constructing SMSI in various reactions are classified and discussed in detail to guide the development of new heterogeneous catalytic systems, providing valuable guidance for the design of efficient and durable catalytic systems. Finally, common research methods for SMSI catalysts are summarized from the perspectives of advanced in situ characterization techniques and theoretical modeling methods, which enable a deeper understanding of SMSI phenomena. To conclude, potential future research directions are outlined to overcome the current challenges and inspire the development of next‐generation heterogeneous catalysts with enhanced activity, stability, and selectivity.