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The behavior of Pd three-way catalysts promoted with Ce-Zr mixed oxides and supported on alumina subjected to thermal degradation treatments has been examined during light-off tests under stoichiometric CO+NO+O 2 . Attention was paid to the region of aging temperature 1273-1373 K, where phase segregation of the ceria-zirconia promoter occurs. Characterization of the samples was performed...
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