This study examines the development of effective passive adsorption materials for NOx removal, with a primary focus on unraveling the dynamics of palladium species impregnated onto zeolite under hydrothermal oxidation conditions. Employing in situ transmission electron microscopy (TEM), the research elucidates the formation of volatile masses at lower temperatures, gradually coalescing during temperature escalation. At the pinnacle temperature of 750 °C, a dispersal process ensues, liberating highly mobile smaller particles. The insights garnered from these in situ TEM studies offer an understanding for optimizing and preparing supported noble-metal materials/catalysts, thereby propelling the advancement of materials exhibiting superior performances.
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Sree et al. (2024) studied this question.
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