J. Kaspar et al., Dependency of the oxygen storage capacity in zirconia-ceria solid solutions upon textural properties, TOP CATAL, 16(1-4), 2001, pp. 83-87
The oxygen storage capacity of Ce0.2Zr0.8O2 solid solutions, prepared by di
fferent synthesis routes and aged at 1000 degreesC, is investigated by mean
s of temperature-programmed reduction, total- and dynamic-OSC measurements.
The use of CO and H-2 as reducing agent is compared under dynamic conditio
ns. It is observed that the dynamic OSC is critically dependent on sample p
re-treatment and the nature of the reducing agent in the texturally unstabl
e sample. In contrast, on a thermally stable Ce0.2Zr0.8O2 only minor effect
s of the pre-treatment upon dynamic OSC are noticed.