6533b851fe1ef96bd12aa2b5

RESEARCH PRODUCT

Co3O4/CeO2 and Co3O4/CeO2–ZrO2 composite catalysts for methane combustion: Correlation between morphology reduction properties and catalytic activity

Giulio DeganelloG. Di CarloLeonarda F. LiottaGiuseppe Pantaleo

subject

Morphology (linguistics)Materials scienceProcess Chemistry and TechnologyComposite numberInorganic chemistrychemistry.chemical_elementGeneral ChemistryCatalysisMethaneCatalysislaw.inventionchemistry.chemical_compoundchemistryNitrateChemical engineeringlawCalcinationMethane combustionCobalt

description

Abstract Co3O4/CeO2 and Co3O4/CeO2–ZrO2 composite catalysts have been prepared by two different techniques, co-precipitation by citrate method and impregnation with cobalt nitrate of pre-formed ceria and ceria–zirconia oxides. The materials, as prepared and after ageing at 750 °C 7 h, were tested for methane combustion and the catalytic performances were compared with those of a commercial Co3O4, used as reference. A significant improvement of the activity was observed in the composite oxide Co3O4(30 wt%)/CeO2(70 wt%), prepared by citrate method, which exhibits the lowest light-off temperature of methane (T50 = 400 °C) and does not suffer deactivation after calcination at 750 °C 7 h.

yearjournalcountryeditionlanguage
2005-05-01Catalysis Communications
https://doi.org/10.1016/j.catcom.2005.02.006