Ammonia Decomposition in Electric Field over Ce‐based Materials - Archive ouverte HAL
Article Dans Une Revue ChemCatChem Année : 2023

Ammonia Decomposition in Electric Field over Ce‐based Materials

Résumé

Electric field-induced decomposition of ammonia into hydrogen and nitrogen was investigated over CeO 2 , Fe-, Ru-deposited CeO 2 , CePO 4 and Sr-doped CePO 4 , and CeZrO 4 in a packed bed down-flow reactor. The effect of applied current, concentration of ammonia in a feed, and residence time was examined using CeO 2 alone. The conversion of ammonia was also studied with respect to a reduction temperature, loading and a type of the deposited metal. The activity results have been analyzed in terms of surface, morphological and electrical characterization of the catalysts. Among metal-deposited catalysts, ammonia decomposition result at 4 mA was the best for 1 wt % Fe/CeO 2 reduced at 550 °C, showing 22 % of conversion with 0.18 mmol of converted ammonia per kJ of energy consumed. The activity of studied Ce-based catalysts normalized per mass of loaded catalyst showed an accordance in activity-porosity relation.

Domaines

Catalyse
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Dates et versions

hal-04057815 , version 1 (26-04-2023)

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Valeriia Maslova, Elodie Fourré, Gleb Veryasov, Nikolai Nesterenko, André Grishin, et al.. Ammonia Decomposition in Electric Field over Ce‐based Materials. ChemCatChem, 2023, 15 (4), pp.e202201626. ⟨10.1002/cctc.202201626⟩. ⟨hal-04057815⟩
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