Aluminium doped ceria-zirconia supported palladium-alumina catalyst with high oxygen storage capacity and CO oxidation activity

Qiang Dong, Shu Yin, Chongshen Guo, Xiaoyong Wu, Takeshi Kimura, Tsugio Sato

    Research output: Contribution to journalArticlepeer-review

    11 Citations (Scopus)

    Abstract

    The Ce0.5Zr0.3Al0.2O1.9/Pd- γ-Al2O3 catalyst prepared by a mechanochemical route and calcined at 1000 °C for 20 h in air atmosphere to evaluate the thermal stability. The prepared Ce0.5Zr0.3Al0.2O 1.9/Pd-γ-Al2O3 catalyst was characterized for the oxygen storage capacity (OSC) and CO oxidation activity in automotive catalysis. For the characterization, X-ray diffraction, transmission electron microscopy and the Brunauer-Emmet-Teller (BET) technique were employed. The OSC values of all samples were measured at 600 °C using thermogravimetric- differential thermal analysis. Ce0.5Zr0.3Al 0.2O1.9/Pd-γ-Al2O3 catalyst calcined at 1000 °C for 20 h with a BET surface area of 41 m2 g-1 exhibited the considerably high OSC of 583 μmol-O g -1 and good OSC performance stability. The same synthesis route was employed for the preparation of the CeO2/Pd-γ-Al 2O3 and Ce0.5Zr0.5O 2/Pd-γ-Al2O3 for comparison.

    Original languageEnglish
    Pages (from-to)4989-4992
    Number of pages4
    JournalMaterials Research Bulletin
    Volume48
    Issue number12
    DOIs
    Publication statusPublished - 2013

    Keywords

    • A. Nanostructures
    • A. Oxides
    • B. Chemical synthesis
    • D. catalytic properties

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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