Abstract Three CeO2–ZrO2–Y2O3–La2O3 (CZ) nanomaterials with controllable crystallite size were prepared by a simple co-precipitation method combined with hydrothermal treatment at different temperatures. The material CZ-180 possesses a high surface area of 43.6 m2 g−1 and a low reduction temperature of 344 °C simultaneously even after aging at 1000 °C for 4 h. Moreover, with improving hydrothermal temperature, the incorporation of rear earth metals was accelerated and surface properties were modified. And higher Pd dispersion and larger proportion of active Pd2+ species were achieved on the modified surface of CZ-180. Consequently, the supported catalyst Pd/CZ-180 shows a superior three-way catalytic performance.

中文翻译：

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具有增强热稳定性的纳米结构氧化铈-氧化锆基材料的设计合成和表征及其在三元催化中的应用

摘要 通过简单的共沉淀法结合不同温度的水热处理制备了三种晶粒尺寸可控的CeO2-ZrO2-Y2O3-La2O3 (CZ)纳米材料。即使在 1000°C 下老化 4 小时后，材料 CZ-180 仍具有 43.6 m2 g-1 的高表面积和 344°C 的低还原温度。此外，随着水热温度的提高，稀土金属的掺入加速并改变了表面性质。并且在CZ-180的改性表面上实现了更高的Pd分散和更大比例的活性Pd2+物种。因此，负载型催化剂 Pd/CZ-180 显示出优异的三元催化性能。