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A study by a team from The Ohio State University and Ford is providing insight into the deactivation mechanism of rhodium in three-way catalysts (TWC) for automotive emissions control. The study, which could enable more efficient usage of rhodium in TWCs, is published in the ACS journal Chemistry of Materials..
A study of the microstructures of catalytic converters has shown a build-up of rhodium aluminate reduces the catalyst efficiency over time. With this knowledge, catalytic converter design can be improved to increase longevity.