The oxygen storage capacity of Ce 0.2Zr 0.8O 2 solid solutions, prepared by different synthesis routes and aged at 1000°C, is investigated by means of temperature-programmed reduction, total- and dynamic-OSC measurements. The use of CO and H 2 as reducing agent is compared under dynamic conditions. It is observed that the dynamic OSC is critically dependent on sample pre-treatment and the nature of the reducing agent in the texturally unstable sample. In contrast, on a thermally stable Ce 0.2Zr 0.8O 2 only minor effects of the pre-treatment upon dynamic OSC are noticed.
Titolo: | Dependency of the oxygen storage capacity in zirconia-ceria solid solutions upon textural properties |
Autori: | |
Data di pubblicazione: | 2001 |
Rivista: | |
Abstract: | The oxygen storage capacity of Ce 0.2Zr 0.8O 2 solid solutions, prepared by different synthesis routes and aged at 1000°C, is investigated by means of temperature-programmed reduction, total- and dynamic-OSC measurements. The use of CO and H 2 as reducing agent is compared under dynamic conditions. It is observed that the dynamic OSC is critically dependent on sample pre-treatment and the nature of the reducing agent in the texturally unstable sample. In contrast, on a thermally stable Ce 0.2Zr 0.8O 2 only minor effects of the pre-treatment upon dynamic OSC are noticed. |
Handle: | http://hdl.handle.net/11368/1694249 |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1023/A:1016682831177 |
Appare nelle tipologie: | 1.1 Articolo in Rivista |
File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.