From Al2O3-supported Ni(II)-ethylenediamine Complexes to CO Hydrogenation Catalysts: Importance of the Hydrogen Post-treatment Evidenced by XPS - Archive ouverte HAL
Article Dans Une Revue Catalysis Letters Année : 2008

From Al2O3-supported Ni(II)-ethylenediamine Complexes to CO Hydrogenation Catalysts: Importance of the Hydrogen Post-treatment Evidenced by XPS

Résumé

Ni (7 wt%)/Al2O3 catalysts prepared by decomposition of Ni(II)-ethylenediamine complexes in inert atmosphere initially contain a mixture of metallic and oxidized nickel. X-ray photoelectron spectroscopy shows that after a hydrogen treatment at 500°C, the system contains more metallic nickel than catalysts prepared from the usual precursor, nickel nitrate. Carbonaceous species resulting from the partial oxidation of ethylenediamine are also eliminated. The catalyst post-treated in hydrogen exhibits a high metallic surface area accessible to reactants and is able to catalyze CO methanation.

Domaines

Catalyse

Dates et versions

hal-00308479 , version 1 (30-07-2008)

Identifiants

Citer

Fabien Négrier, Eric Marceau, Michel Che, Jean-Marc Giraudon, Léon Gengembre, et al.. From Al2O3-supported Ni(II)-ethylenediamine Complexes to CO Hydrogenation Catalysts: Importance of the Hydrogen Post-treatment Evidenced by XPS. Catalysis Letters, 2008, 124, pp.18..23. ⟨10.1007/s10562-008-9514-5⟩. ⟨hal-00308479⟩
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