Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1486145 | Journal of Non-Crystalline Solids | 2006 | 7 Pages |
The object of this research was to investigate the effects of various precursors and different fabricating procedures of Pd/Al2O3–CeO2 catalysts by the sol–gel method. The physicochemical properties and structures of catalyst were characterized with BET surface area, X-ray powder diffraction (XRPD), and scanning electron microscopy (SEM). The performance of the Pd/Al2O3–CeO2 catalyst was also evaluated by CO oxidation tests with a continuous quartz reactor. The results indicated that the catalyst prepared with inorganometallic precursors showed a high dispersion of Pd, large surface area and pore volume, and a high activity in CO oxidation. The higher redox interaction between Pd and Ce of the support starting with inorganometallic precursors, as determined from X-ray powder diffraction, is suggested as being responsible for such a catalytic behavior.