Abstract: The C u O - Z n O - C e O₂ / A l ₂O₃ catalyst using in catalytic wet oxidation process was prepared by coprecipitation, and X ray diffraction (XRD) was used to characterize the catalyst. The effect of C u O - Z n O - C e O₂ / A l ₂O₃ on catalyst activity and stability was studied using phenol as the target pollutants. The results shows that addition of Ce increased the degree of dispersion of catalyst system, the active element of Cu, Zn, Ce in catalyst existed in the form of CuO, ZnO and CeO₂, and all the active element successfully loaded on carrier A l ₂O₃. For the phenol wastewater with initial concentration of 900 mg/L, the removal rate of COD reached 95% with reaction temperature 180 ℃, pressure 4 MPa, stirring speed 300 r/min, the catalyst amount 0.1 g/(100 mL), reaction time 30 min.

Key words: Wet air oxidation,    ,  Catalysts,    ,  Chemical oxygen demand,   C u O - Z n O - C e O₂ / A l ₂O₃

摘要： 采用共沉淀法制备了用于催化湿式氧化工艺的 C u O - Z n O - C e O₂ / A l ₂O₃ 催化剂, 采用 X射线衍射 ( XR D)对催化剂进行了表征, 并以实验室配置的苯酚溶液为目标污染物, 考察了C u O - Z n O - C e O₂ / A l ₂O₃催化剂的活性和稳定性。结果表明, C e的加入有提高催化剂体系分散度的作用; 催化剂中的活性组分 C u、 Z n、 C e分别以 C u O、 Z n O、 C e O₂的形式存在, 并成功负载于载体 A l 2O3; 对于初始质量浓度为9 0 0m g / L的实验室配置苯酚溶液, 在反应温度为1 8 0℃, 压力为4MP a, 搅拌速度为3 0 0r /m i n, 催化剂加入量为0. 1g /( 1 0 0mL) , 反应时间3 0m i n时, 化学需氧量( COD) 去除率达到9 5%。

关键词: 湿式氧化,  , 催化剂, 化学需氧量,  , C u O - Z n O - C e O₂ / A l ₂O₃