Modification of CeO2–ZrO2 mixed oxides by coprecipitated/impregnated Sr: Ef…

Abstract. Strontium was introduced to modify CeO2–ZrO2 mixed oxides (CZ) by two methods, coprecipitation (CZS) and impregnation (SCZ). Structural and textural characterizations revealed that Sr could retard the sintering of oxide particles and restrict the phase segregation during the hydrothermal ageing treatment. Specifically, the impregnation method brought about a more satisfying ther…