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In the context of evolving market conditions, the three-way catalyst (TWC) design is entering an exciting new phase. It remains the main emission control strategy for gasoline powered vehicles; in the meantime a rapid period of evolving engine developments, the constrained tailpipe regulations and the material supply issues present a unique challenge to the catalyst developers. A key approach here is to achieve highly beneficial emission performance based on the ultra-low PGM levels. In this regard, we mainly focus on the materials design and have developed the advanced spinel oxides for zero precious metals (ZPGM) and synergized precious metals (SPGM) TWCs. These advanced spinel materials showed improved thermal stability compared to that of PGM based standard materials. Fundamental studies on the microstructure of spinel oxide with newly developed composition confirm the aging stability.

In the context of evolving market conditions, the three-way catalyst (TWC) design is entering an exciting new phase. It remains the main emission control strategy for gasoline powered vehicles in the broad context of evolving engine technology; the move to more real-world, transient testing and much tighter tailpipe emissions regulations. The specific context here is the launch of BSVI regulations for gasoline passenger cars in India. The key approach described here is to achieve highly beneficial emission performance based on low PGM levels with the emphasis on new materials technology to significantly alter the functional balance between PGM and “promoters”. We will focus on the design of materials with the spinel structure and have developed catalyst products that synergize low levels of PGM (so-called SPGM) leveraging the key properties of the advanced spinel oxides. Microstructure studies on the spinel oxide with newly developed composition confirm the aging stability [1,2].