(6ba) Frabrication of Fe-ZSM-5@CeO2 Catalysts with a Core-Shell Structure and the Enhanced Performances for the Selective Catalytic Reduction of NO with NH3

Research Interests: We have rationally designed and originally developed a high-performance deNOx catalyst based on core-shell structured Fe-ZSM-5@CeO₂, which are synthesized via a solvothermal method. The as-prepared catalysts have been characterized systematically to elucidate their morphological structure and surface properties. As compared with conventional Fe-ZSM-5/CeO₂, Fe-ZSM-5@CeO₂ possess a much better catalytic activity, higher N₂ selectivity, more extensive operating-temperature window, higher stability, and SO₂ tolerance. The feature of hollow and porous structures provides a larger surface area and more active sites to adsorb and activate reaction gases, resulting in the high performance. Moreover, the uniform distribution and strong interaction of Fe-ZSM-5 and CeO₂ species not only enhance the catalytic cycle but also inhibit the deactivation of Fe-ZSM-5, resulting in high catalytic cycle stability.

Teaching Interests: The excellent deNOx performance of Fe-ZSM-5@CeO₂ can be attributed to the core-shell structures, the uniform distribution of active sites, as well as the strong interaction of Fe-ZSM-5and CeO₂ species. The excellent catalytic performance suggests that Fe-ZSM-5@CeO₂ is promising candidates for low-temperature deNOx catalysts. More importantly, the present study indicates that the core-shell architectures and well-dispersed active components can effectively enhance the performance of catalysts.