A MOF-templated approach for designing ruthenium–cesium catalysts for hydrogen generation from ammonia
- Hu, Zhigang
- Mahin, Julien
- Torrente-Murciano, L
DOIAbstract
Ammonia is regarded as a safe hydrogen energy carrier due to its high hydrogen content and narrow flammable range. Herein, we report a novel metal-organic framework (MOF) templated approach to synthesize highly active catalysts for the hydrogen production from ammonia. Calcination of ruthenium-impregnated UiO-66(Zr)-NH2 leads to formation of small ruthenium nanoparticles (<3 nm) with a strong interaction with the resulting mesoporous zirconia support. These catalysts present a turnover frequency considerably higher than Ru/CNTs catalysts, defying the established believe of 3–5 nm as optimum Ru size for this reaction. Moreover, cesium promoter acts as an electronic modifier of Ru and also as a molecular spacer enhancing the stability under r...
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