摘要
以微介孔分子筛ZSM-5为载体,硝酸铁和硝酸铈溶液为前躯体,采用等体积浸渍法制备了Fe-Ce/ZSM-5催化剂。与其它方法相比,等体积浸渍法具有操作简单、无需复杂设备、效率高等特点。通过催化氧化过氧化氢(H2O2)技术(CWPO)处理甲基橙模拟废水,考察其催化性能,得出最佳制备条件。结果表明,在H2O2存在的条件下,浸渍液浓度为2.0mol/L、Fe/Ce摩尔比为3∶1、焙烧温度为400℃时,其处理效果最佳。在最佳制备条件基础上,采用H2O2协同处理甲基橙废水,反应100min后,甲基橙去除率高达85%。通过X射线衍射、透射电镜手段进行表征,表明负载金属的加入不仅保持了分子筛均匀的孔道结构,而且同时具有Fe-Ce催化活性。
A series of Fe-Ce/ZSM-5 catalysts were synthesized via equivalent-volume co-impregnation of ferric nitrate and cerium nitrate on micro-meso pore ZSM-5. The pore volume impregnation is thought the one with simple operation without complex equipment, and high efficiency. The optimal catalyst preparation condition was evaluated by catalytic oxidation of hydrogen peroxide （H2 O2 ） technology （CWPO） to degrade the methyl orange solution. The results indicate that the best preparation conditions are：co-impregnation solution concentration of 2.0 mol/L with the mole ratio of Fe/Ce of 3 ： 1 and the calcination temperature of 400 ℃. In the presence of H2O2 and reaction time of 100 min, more than 85 % methyl orange is removed. TEM and XRD results show that Fe-Ce/ZSM-5 remains the ZSM-5 pore structure and the catalytic properties of iron oxides and cerium oxides.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2015年第11期87-90,共4页
Petroleum Processing and Petrochemicals
基金
中国石油大学(华东)研究生创新工程项目(YCX2015032)
