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Article Dans Une Revue International Journal of Hydrogen Energy Année : 2018

Glycerol steam reforming over Ru-Mg-Al hydrotalcite-derived mixed oxides: Role of the preparation method in catalytic activity

Eliane Dahdah
  • Fonction : Auteur
Samer Aouad
Jane Estephane
  • Fonction : Auteur
Bilal Nsouli
  • Fonction : Auteur

Résumé

Ru-Mg-Al hydrotalcite-derived mixed oxides were synthesized using two preparation methods. The grafted catalyst was prepared by co-precipitation of the Ru/Mg/Al precursors at a constant pH. The impregnated catalyst was prepared by wet-impregnation of a calcined Mg-Al support with the Ru precursor (Ru(NO) (NO 3 )3). Both catalysts were calcined at 600 °C and characterized by X-ray diffraction, CO 2- temperature programmed desorption and H 2-temperature programmed reduction techniques. Catalytic activities were compared in the glycerol steam reforming reaction (400e700 °C, WGFR 9:1, flow rate: 0.075 ml/min) followed by a short-term stability test at 600 °C. The impregnated catalyst demonstrated a superior activity beyond 600 °C. This difference in activity was attributed to the easier accessibility of the active phase resulting from the preparation method. Short-term stability tests revealed deactivation of both catalysts as a result of coke formation.

Domaines

Chimie
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Dates et versions

hal-04303387 , version 1 (23-11-2023)

Identifiants

Citer

Eliane Dahdah, Samer Aouad, Jane Estephane, Bilal Nsouli, Cédric Gennequin, et al.. Glycerol steam reforming over Ru-Mg-Al hydrotalcite-derived mixed oxides: Role of the preparation method in catalytic activity. International Journal of Hydrogen Energy, 2018, 43 (43), pp.19864-19872. ⟨10.1016/j.ijhydene.2018.09.042⟩. ⟨hal-04303387⟩
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