(523c) Solution Combustion Synthesis of Ni-Pt/CeO2 nanocomposites for Hydrogen Generation Using Catalytic Decomposition of Hydrous Hydrazine

In search of a liquid hydrogen source for PEM fuel cell vehicles, hydrous hydrazine is a promising candidate with a high hydrogen content of 8 wt% and benign byproduct (nitrogen) via complete decomposition. In this work, the decomposition reaction of hydrous hydrazine is thoroughly investigated using several catalysts. The NiPt/CeO₂ exhibits superior catalytic activity and selectivity towards hydrogen generation, making it a promising catalyst for this reaction. Nonetheless, the preparation of such catalysts often involves complicated processes such as multistep synthesis and long reaction time. In this study, NiPt/CeO₂ catalysts were synthesized simply and rapidly by solution combustion synthesis (SCS) of Ni/CeO₂, followed by impregnation of Pt (impregnation combustion synthesis) using different fuel types (hydrazine, glycine and oxalyldihydrazite) and amounts as well as different Pt loadings on the catalyst. The best synthesis parameters were determined and the results were compared to different impregnation techniques and one-step SCS of NiPt/CeO₂.