Abstract
The new catalyst technology,which makes it possible to improve the durability and reduce the loading amount of platinum group metals (PGM) for the three-way catalyst(TWC), has been developed. In the developed catalyst, the PGM particle is highly dispersed and strongly loaded on the ceramics support material to prevent their sintering. The diameter of the PGM particle in the developed catalyst was maintained to be lower than the conventional catalyst after the aging. The ceria oxide was used as one of the support materials for the developed catalyst, and its oxygen storage capacity and speed were increased as compared with the conventional catalyst. The developed catalyst has the excellent purification performance at lower PGM loading amount than the conventional catalyst.
