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EnglishThe role of the so-called oxygen storage and release capacity (OSC) in promoting the activity of noble metals in the three-way catalysts (TWCs) is critically discussed. It is shown that the promoting effects of CeO2 in the TWCs cannot be attributed to a simple redox type of effect according to the reaction CeO2 .tautm. CeO2 - x + x/2O2, since multiple and sometimes intriguing effects of CeO2 promoter have been obsd., particularly in the latest generation of TWCs contg. modified CeO2-ZrO2 mixed oxides.
| Titolo: | On the role of oxygen storage in three-way catalysis |
| Autori: | |
| Data di pubblicazione: | 2004 |
| Rivista: | |
| Abstract: | The role of the so-called oxygen storage and release capacity (OSC) in promoting the activity of noble metals in the three-way catalysts (TWCs) is critically discussed. It is shown that the promoting effects of CeO2 in the TWCs cannot be attributed to a simple redox type of effect according to the reaction CeO2 .tautm. CeO2 - x + x/2O2, since multiple and sometimes intriguing effects of CeO2 promoter have been obsd., particularly in the latest generation of TWCs contg. modified CeO2-ZrO2 mixed oxides. |
| Handle: | http://hdl.handle.net/11368/1695758 |
| Digital Object Identifier (DOI): | 10.1023/B:TOCA.0000024333.08447.f7 |
| URL: | http://www.springerlink.com/content/t858223583776470/ |
| Appare nelle tipologie: | 1.1 Articolo in Rivista |
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