FeO_x/ZrO_2催化剂结构及CO氧化性能的研究

Structure of FeO_x/ZrO_2 Catalysts and their CO Oxidation Performance

利用 XRD、TPR及固定床微反技术 ,研究了添加 Fe Ox 对 Zr O2 载体结构稳定性和催化性能的影响 .结果表明 ,Fe Ox 对载体 Zr O2 具有良好的热稳定性 ,能阻止 Zr O2 从四方晶型向单斜晶型的转变 ;Fe Ox 与载体 Zr O2 之间的相互作用 ,能促进 Fe Ox 在载体表面的分散 ,并能提高 Fe Ox/ Zr O2 催化剂的氧化和还原性能 .

The effect of introducing FeO\- x to ZrO 2 support on the structural stability and the oxidation activities of CO was studied using XRD, TPR and fixed bed microraction techniques. It was found that introduction of FeO\- x improves the thermal stability of ZrO 2 and inhibits the phase transformation of tetragonal ZrO 2 to monoclinic ZrO 2. The interaction between FeO\- x and ZrO 2 has effect on the dispersion of FeO\- x on the support surface, which increases the oxidation activities of Fe\-2O\-3/ZrO 2 catalysts.