Studies of the oxygen release reaction in the platinum–ceria–zirconia system

Thermal stability of ceria catalyst on alumina and its surface oxygen storage capacity

“…4. Hori et al [9] indicated the number of available oxygen atom and surface area per weight in Pt-loaded CeO 2 from OSC measurement using CO oxidation. From their data, the amount of the available oxygen per surface area is calculated to be 5.7 mol (as O atom)/m 2 for PtCeO 2 (heated at 500 • C) and 5.5-5.7 mol/m 2 for Pt-CeO 2 aged at 1000 • C. Since our OSC is scaled as oxygen molecule, the used oxygen atom was evaluated as 5.0(±0.6) mol/m 2 .…”

Effects of Ni-Doping of Ceria-Based Materials on Their Micro-Structures and Dynamic Oxygen Storage and Release Behaviors

“…DOSR is defined as the reaction rate of oxygen storage and release in the first second of every pulse test [6,34]. DOSR can be calculated as the follows:…”

Heterogeneous environmental catalysis – a gentle art: CeO2–ZrO2 mixed oxides as a case history

“…Investigation of the redox properties of Ce 0.5 Zr 0.5 O 2 using CO as a reducing agent showed that surface processes limit the rate of reduction [70,102]. Accordingly, different surface processes have been identified in the dynamic OSC measurements during which significant CO dissociation can Fig.…”