Keiichi Narita

Design of the intelligent catalyst for Japan ULEV standard

We have reported the innovation of “An intelligent catalyst” which has the function for self-regeneration of Pd realized through the solid solution and segregation of Pd in a perovskite crystal. In this paper, the issues and the solutions for a practical perovskite catalyst for the Japan ULEV standards are discussed.

Intelligent catalysts with self-regenerative function

An “intelligent catalyst” that has the self-regenerative function of Pd (Palladium) achieved through solid solution and segregation of Pd in a perovskite crystal was first commercialised in 2002. Daihatsu has made attempts to apply this intelligent technology to other precious metals, such as Rh (Rhodium) and Pt (Platinum), and advanced intelligent catalysts with a self-regenerative function of Rh and Pt have been developed successfully.