Novel mesoporous zirconia-based catalysts for WGS reaction - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Applied Catalysis B: Environmental Année : 2010

Novel mesoporous zirconia-based catalysts for WGS reaction

Joanna Goscianska
  • Fonction : Auteur
Emma Gibson
  • Fonction : Auteur
Marco Daturi

Résumé

Newly synthesized mesoporous zirconia-based catalysts were investigated for the WGS reaction, using niobium oxide as a promoter and platinum as the active metal Their performances for hydrogen production were correlated to the surface properties Niobium addition gives rise to different effects. the 0.3 loading considerably enhances the catalytic performances of the catalyst for all temperatures, for both hydrogen production and selectivity (with respect to the CO to CO(2) oxidation) On the contrary, when a Nb monolayer is produced on the zirconia surface, the activity is highly reduced with respect to the Pt/ZiO(2) sample. In particular. the acid-base behaviour of the surface was linked to the zirconia-niobia interaction and its consequence on the metal-support interaction. A description of the surface was attempted and a reaction pathway through formate species formation and decomposition proposed. (C) 2010 Elsevier B V All rights reserved.

Domaines

Chimie
Fichier non déposé

Dates et versions

hal-01840522 , version 1 (16-07-2018)

Identifiants

  • HAL Id : hal-01840522 , version 1

Citer

Joanna Goscianska, Maria Ziolek, Emma Gibson, Marco Daturi. Novel mesoporous zirconia-based catalysts for WGS reaction. Applied Catalysis B: Environmental, 2010, 97 (1-2), pp.49--56. ⟨hal-01840522⟩
25 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More