稀土铈掺杂纳米Pd粒子的制备及催化性能

Study on Preparation and Catalytic Properties of Nano-palladium Metals Doped by Rare Earth Cerium

以Pd、Ce为原料 ,用电弧等离子体法制备了纳米复合粉体。用TEM、XRD、SEM及等离子体发射光谱等方法研究其结构和组成。采用机械方法将纳米PdCe加载到γ Al2 O3载体表面上制成负载型纳米催化剂 ,以CO氧化反应为探针测试其催化活性 ,结果表明 ,纳米PdCe催化剂具有很好的催化活性。

Nano-sized composite particle was prepared by H 2+Ar arc plasma method using Pd and Ce as starting materials.TEM,XRD,SEM, and ICP were used to characterize the structure and composition of the particle. Through mechanical process, nano-PdCe particles were supported on γ-Al 2O 3 surface to prepare nano-sized catalyst. The activity of the nano-PdCe catalyst was studied through CO oxidation. The results showed that the supported nano-PdCe catalyst was of good catalytic activity.