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.
|Number of pages||4|
|Journal||Materials Research Bulletin|
|Publication status||Published - 2013|
- A. Nanostructures
- A. Oxides
- B. Chemical synthesis
- D. catalytic properties