ZrO_2改性对CuO／γ－Al_2O_3催化剂结构及TPR性能的影响

Effect of ZrO_2 on Structure and TPR Property of CuO/γ-Al_2O_3 Catalyst

本文用ＸＲＤ、ＸＰＳ、ＴＰＲ和ＴＧ等技术研究了ＺｒＯ２的改性对ＣｕＯ／γ－Ａｌ２Ｏ３催化剂的结构及还原性能的影响．实验结果表明，ＺｒＯ２对γ－Ａｌ２Ｏ３的改性会削弱表面铜物种与γ－Ａｌ２Ｏ３载体之间的相互作用，γ－Ａｌ２Ｏ３表面的活性铜物种的数目增加，并有效地促进该铜物种的还原，从而提高了ＣｕＯ／γ－Ａｌ２Ｏ３催化剂对ＣＯ的氧化活性。

The effect of ZrO2 modification of γ-Al2O3, on the structure and the reduction property of CuO/γ-Al2O3 catalyst was investigated by XRD.XPS.TPR and TG methods. The results indicated that ZrO2modification of γ-Al2O3 support could decrease the Interaction of copper species with γ-Al2O3 support,and promote reduction of its species, which leads to the increase of the amount of active copper species and the activity of CO oxidation.