(569t) A Review of Recent Development on CO2 Hydrogenation over Structured Zeolites

This review summarizes the principal developments in CO₂ hydrogenation using structured zeolites, including their synthesis, characterization, and practical application. We emphasize the role of bimodal mesoporous zeolites in improving catalyst performance, indicating their advantages such as higher porosity and thermal stability. Synthesis methodologies are compared, such as bottom-up techniques (templating, non-templating) and top-down methods (dealumination, desilication, recrystallization), which have their specific advantages, yet drawbacks are also highlighted. The integration of advanced and modern characterization techniques (spectroscopy, microscopy, and thermal analysis) is emphasized which in turn links with a deeper understanding of the dynamic behavior of the zeolites and catalytic mechanisms. To overcome thermodynamic and morphological constraints, the paper concludes with a recommendation for more research aimed at improving the synthesis and characterization techniques as a means to improve zeolite catalytic performance in the CO₂ hydrogenation activity that is of paramount importance in the global effort to minimize carbon emissions.