Improvement in Oxygen Storage Capacity
960794
02/01/1996
- Event
- Content
- Cerium oxide (Ceria) is known to have good oxygen storage capacity (OSC) and is used widely in three-way catalysts for automobiles, but it has a problem of heat stability since it is less stable than aluminium oxide (Alumina).In the present work, cerium-zirconiumyttrium (Ce-Zr-Y) oxide systems were investigated with the aim of improving the heat stability of CeO2-based oxide systems, which would result in great improvement in OSC.We found an optimum composition of Ce-Zr-Y oxide with platinum (Pt) dispersed in it at a quantity of 0.1 % in weight, which showed good OSC starting from 100°C upwards even after thermal aging at 1000°C for 2 hours under variable atmospheric conditions of rich-lean fluctuations.
- Pages
- 10
- Citation
- Tanaka, H., and Yamamoto, M., "Improvement in Oxygen Storage Capacity," SAE Technical Paper 960794, 1996, https://doi.org/10.4271/960794.