NOx decomposition using Ni- and Fe-loaded biocarbon catalysts - IMT Mines Albi-Carmaux
Article Dans Une Revue Applied Catalysis O: Open Année : 2024

NOx decomposition using Ni- and Fe-loaded biocarbon catalysts

Résumé

Fern and willow (W) impregnated with heavy metals (Ni/Fe) were pyrolyzed (800 °C, N2) to produce heavy metal-loaded biocarbon to catalyze NO decomposition (deNOx). The effects of reaction temperature (200, 350 and 500 °C), biomass type and impregnated metals on deNOx performance were investigated. WFe and WNi achieved the highest deNOx performance at 200 °C (16.5%) and 500 °C (30.6%) respectively. The biocarbon composition and structure were crucial for NO adsorption and metal dispersion, which induced higher CO2 adsorption (TPO), high specific surface area (419.1 m2/g for WNi), and highly dispersed small Ni particles (SEM). The main routes for deNOx evidenced by on-line monitoring were direct decomposition of NO into N2 and O2, and NO reduction to N2, CO and CO2 by biocarbon sites. Dispersed catalytic metals, as well as NO adsorption and reactivity by biocarbon functional groups, reflect the cost-effective and eco-friendly deNOx potential of biocarbon catalysts.
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hal-04663709 , version 1 (29-07-2024)

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Théodore Graul, María González Martínez, Yi Qiu, Floriane Fourgeaud, Kuo Zeng, et al.. NOx decomposition using Ni- and Fe-loaded biocarbon catalysts. Applied Catalysis O: Open, 2024, 194, pp.206982. ⟨10.1016/j.apcato.2024.206982⟩. ⟨hal-04663709⟩
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