Speaker
Description
Cerium oxide (ceria) has recently brought extensive interest due to its possible applications in numerous fields, e.g. drug delivery and biomedical applications, photocatalysis and environmental catalysis (air purification, water cleansing, etc.). Specific redox properties together with high specific surface area make ceria nanoparticles promising catalysts for oxidation reactions. Cerium dioxide may be synthesised from various precursors and using different methods, e.g. thermal decomposition, hard or soft template synthesis, sol-gel method, sonochemical or hydrothermal synthesis. In the research a series of ceria samples and their modifications with cobalt was synthesised using various methods. The materials were characterised with X-ray powder diffraction, transmission electron microscopy (chosen systems) and tested as catalyst in the reaction of model soot (Printex U) combustion. All samples were active in the investigated reaction, with temperature of 50% soot conversion not exceeding 400ºC in tight contact mode. The catalytic performance highly depended on morphology of ceria, as well as on differences in cobalt dispersion.
| Field | Chemistry |
|---|---|
| Length | Short 15 min |
