Synthesis, Characterization, and Catalytic Applications of Zeolite‐Based Composites Integrating LDHs, MOFs, and Polymers

Zeolite‐based composites integrating with layered double hydroxides, metal–organic frameworks, and polymers have emerged as versatile catalysts combining multifunctional active sites. This review provides an overview of their synthesis, characterization, and catalytic applications, highlighting how rational design governs catalytic behavior. We outline available approaches for engineering these composite catalysts, including in situ growth, surface functionalization, and core–shell assembly. In addition, the key characterization techniques are summarized to elucidate structure–activity correlations and to verify the integrity of hybrid architectures such as X‐ray diffraction, N 2 sorption, transmission electron microscopy, X‐ray photoelectron spectroscopy, and solid‐state NMR. Moreover, the examples of their catalytic performances have been demonstrated through several catalytic reactions, such as biomass conversion, CO 2 utilization, and cascade/aldol condensation, driven by synergistic acid–base or redox interfaces or highly dispersed metal active sites derived from the hydride structure. Finally, we outline mechanistic insights, key challenges, and perspectives for designing durable, scalable, and multifunctional zeolite‐based composites toward sustainable catalytic applications.