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Developments in ceria-based soot oxidation catalysts, especially during the last decade, are reviewed. Based on the comparisons of the activity, durability and cost-efficiency of different soot oxidation catalysts, four kinds of applicable ceria-based catalysts have been screened out, which are:(1) CexZr1–xO2 catalyst with high cerium content(x>0.76),(2) rare-earth metals(especially Pr) modified ceria,(3) transition metals(especially Mn and Cu) modified ceria, and(4) Ag/CeO 2. Moreover, a general review of recent developments on the morphology-controlled ceria-based catalysts, as well as that on the soot oxidation mechanisms over different ceria-based catalysts, is also presented.
Developments in ceria-based soot oxidation catalysts, especially during the last decade, are reviewed. Based on the comparisons of the activity, durability and cost-efficiency of different soot oxidation catalysts, four kinds of applicable ceria-based catalysts have been screened out, (1) CexZr1-xO2 catalyst with high cerium content (x> 0.76), (2) rare-earth metals (especially Pr) modified ceria, (3) transition metals 4) Ag / CeO 2. Furthermore, a general review of recent developments on the morphology-controlled ceria-based catalysts, as well as that on the soot oxidation mechanisms over different ceria-based catalysts, is also presented.