摘要：

采用浸渍-焙烧法制备了Fe/TiO₂-Al₂O₃、Fe/CeO₂-Al₂O₃复合催化剂,以H₂O₂作为氧化剂,对亚甲基蓝废水进行降解处理,考察了催化剂加入量、H₂O₂加入量、pH、温度以及初始浓度的变化等因素对处理效果的影响。结果表明:Fe/TiO₂-Al₂O₃的催化性能稍优于Fe/CeO₂-Al₂O₃,并且在pH=5,温度为65 ℃条件下,当催化剂加入量为0.15 g、H₂O₂加入量为15 mL、反应时间为60 min时降解率即可达到97%以上。

关键词: 复合催化剂, 催化氧化, 亚甲基蓝

Abstract:

The composite catalysts Fe/TiO₂-Al₂O₃ and Fe/CeO₂-Al₂O₃ have been prepared by impregnation-calcina-tion method. The methylene blue wastewater has been degraded,using H₂O₂ as oxidant. The effects of the factors,such as dosage of catalyst,dosage of H₂O₂,pH,changes of reaction temperature and initial concentration,etc.,on treatment effectiveness are investigated. The results show that the catalytic capacity of Fe/TiO₂-Al₂O₃ is a litter better than that of Fe/CeO₂-Al₂O₃. When pH is 5,reaction temperature 65 ℃,catalyst dosage 0.15 g,H₂O₂ dosage 15 mL and reaction time 60 min,the degradation rate can reach 97% above.

Key words: composite catalyst, catalytic oxidation, methylene blue

中图分类号: 

• X703.1