Self‐Regenerating Rh‐ and Pt‐Based Perovskite Catalysts for Automotive‐Emissions Control

Abstract

As good as new: Perovskite-based catalysts containing Rh and Pt for use in exhaust-emissions control systems are developed. These catalysts are found to be self-regenerating and could thus lead to the use of lower amounts of precious metals. The picture shows the TEM image of Pt grains of catalyst CaTi0.95Pt0.05O3 aged in an engine exhaust at 900 °C for 100 h.