Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
48621 | Applied Catalysis B: Environmental | 2007 | 7 Pages |
Abstract
The current work is devoted to study of CO interaction with PdO/Al2O3–(Cex–Zr1−x)O2 catalysts. Ceria–zirconia–alumina supports with different Ce/Zr ratio were prepared by sol–gel technique. The FT-IR characterization of CO adsorbed at −120 and 25 °C on oxidized and reduced samples revealed that Ce/Zr ratio modifies the surface properties of support and oxidation state of palladium. The catalyst with Ce/Zr molar ratio 0.5/0.5 was characterized with the highest ability to stabilize palladium in oxide state and the highest activity to oxidize CO. Redox treatment of catalysts improves their catalytic activity.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Gabriela Pérez-Osorio, Felipe Castillón, Andrey Simakov, Hugo Tiznado, Francisco Zaera, Sergio Fuentes,