催化湿式氧化吡虫啉农药废水Cu/Mn催化剂稳定性  

Stability analysis of Cu/Mn composite metal oxides catalysts about catalytic wet air oxidation of pesticide wastewater

作　　者：韩玉英[1] 

机构地区：[1]陕西科技大学化学与化工学院,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2012年第4期42-45,共4页Journal of Shaanxi University of Science & Technology

摘　　要：通过共沉淀法制备了用于湿式氧化吡虫啉农药废水的Cu/Mn复合氧化物催化剂,研究了焙烧温度和活性组分配比等因素对Cu/Mn复合氧化物催化剂的活性及稳定性的影响,确定了最佳制备条件,利用BET比表面积测定和XRD对催化剂进行了表征.结果表明,优化条件制备的Cu/Mn复合氧化物催化剂催化湿式氧化处理吡虫啉农药废水时,具有较高的催化活性和稳定性.Cu/Mn=2∶1,焙烧温度800℃,焙烧时间16h,COD去除率为93.12%,催化剂活性组分的流失小于0.3mg/L.对催化剂活性组分不易流失的原因进行了理论解释和计算.A kind of catalyst Cu/Mn was prepared with the co-precipitation method,and applied to the treatment of pesticide wastewater from imidacloprid production by catalytic wet air oxidation.The influences of the roasting temperature and content of Cu/Mn on the activity and stability of the Cu/Mn catalyst were investigated,and the best preparation condition has been determined.The catalyst was characterized by means of BET specific surface area measurement and XRD.The experimental results indicated that the Cu/Mn catalyst was applied in the treatment of imidacloprid wastewater resulted in 93.12% COD removal at Cu/Mn catalyst.The Cu/Mn（Cu∶/Mn=2∶1） was calcinated at 800 ℃ and 16 hours.The concentration of leached Cu and Mn leaching is below 0.3 mg/L.The preliminary theory calculation and analysis for the stability of the catalysts were made.

关 键 词：催化湿式氧化 吡虫啉 Cu/Mn复合氧化物 催化剂流失 

分 类 号：O643[理学—物理化学] X7[理学—化学]