Oxygen storage capacity of noble metal car exhaust catalysts containing nickel and cerium

Oxygen Storage/Redox Capacity and Related Phenomena on Ceria-Based Catalysts

“…All these results also showed that the introduction of small amounts of zirconium into the Ce0 2 lattice was responsible for such a high oxygen mobility. Furthermore, it was clearly shown that noble metals, rhodium in particular, play an active role in promoting the OSC of the support [1,[3][4][5][6]31]. It was shown for example that only Rh can really promote OSC on alumina catalysts [32,33].…”

Chemical and Nanostructural Aspects of the Preparation and Characterisation of Ceria and Ceria-Based Mixed Oxide-Supported Metal Catalysts

“…Since OSC (Oxygen Storage Capacity) was introduced as a way of determining on quantitative basis the capability of ceria-based supports to release oxygen under reducing conditions, and to uptake it under oxidising conditions (359), numerous studies (35,98,160,180,186,203,249,337,341,354,(362)(363)(364)(365)(366)(367) have included OSC measurements, as a routine way of characterising the redox properties of these catalytic systems.…”

Catalytic control of automotive NOx: a review

“…Among several metal oxides, Cerium (Ce) and Nickel (Ni) are the most common. The O storage capacity in catalysts containing Pt, Rh, Ni and Ce supported on Al O has exhibited that at high temperatures, Ni is the dominant storage metal and Ce dominates over Pt and Rh (Loof et al 1989). Cerium oxide (CeO ) has been widely used as additive ingredient in TWCs for various reasons.…”