Author: Monte Roberta Di
Publisher: Springer Publishing Company
ISSN: 1022-5528
Source: Topics in Catalysis, Vol.28, Iss.1-4, 2004-04, pp. : 47-57
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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 ↔ CeO2 − x + x/2O2, since multiple and sometimes intriguing effects of CeO2 promoter have been observed, particularly in the latest generation of TWCs containing modified CeO2–ZrO2 mixed oxides.
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