1995-02-01

Development of Three-Way Catalyst with Using Only Pd as Activator 950257

The Pd only three-way catalyst with Rh as an activator completely removed has been developed. The catalyst has been improved with regards to its thermal stability and its NOx reduction capability in the fuel rich region. These two factors have been known as the weak points of Pd catalyst. The thermal stability of the Pd catalyst was improved by modifying the washcoat alumina to yield a higher thermal stability. On the other hand, the NOx reduction capability was controlled by adding a combination of La and Ba. The developed Pd only three-way catalyst demonstrated the equivalent performance to a current production Pt/Rh catalyst after engine dynamometer aging up to 800°C.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
X