On the Role of Oxygen Storage in Three‐Way Catalysis: Scientific and Technical Developments in Automotive Emissions Control Since the 1970s. Guest Editor: Robbie Burch

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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