层状复合金属氧化物臭氧催化剂的制备及其对苯胺废水降解的动力学研究  

Preparation of Layered Double Oxides Ozone Catalysts and Kinetics Study for Catalytic Ozonation Degradation of Aniline

作　　者：张延青[1] 郭策 王长治 齐元峰 ZHANG Yan-qing;GUO Ce;WANG Chang-zhi;QI Yuan-feng(School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266033,China;Environmental Science Research and Design Institute of Zhejiang Province,Hangzhou 310007,China)

机构地区：[1]青岛理工大学环境与市政工程学院,山东青岛266033 [2]浙江省环境保护科学设计研究院,浙江杭州310007

出　　处：《聊城大学学报（自然科学版）》2020年第3期72-80,共9页Journal of Liaocheng University:Natural Science Edition

基　　金：国家水体污染控制与治理科技重大专项(2018ZX07208-009-06)资助。

摘　　要：分别采用正向/反向共沉淀方法制备用于模拟苯胺废水处理的两类层状复合金属氧化物(LDO)臭氧催化剂,并对其催化臭氧氧化苯胺降解的反应动力学进行分析.结果表明:以Fe 2+、Co 2+、Mn 2+和Fe 3+、Al 3+为制备原料,Co/Fe或Co/Al类二元LDO催化剂具有最佳的臭氧催化效果且对催化臭氧氧化苯胺的降解反应均符合伪一级反应动力学模型;相比正向共沉淀法制备的LDO催化剂,反向共沉淀法制备的LDO催化剂能够更大程度的降低苯胺废水COD Cr和TOC降解所需活化能;SEM测试发现反向共沉淀法制备的LDO臭氧催化剂可以得到更加完整且分布均匀的层板状结构.Two kinds of Layered Double Oxide(LDO)ozone catalysts were prepared by forward/reverse co-precipitation-calcination method.The reaction kinetics of LDO ozone catalysts for the degradation of aniline wastewater were established.The study showed that Fe 2+,Co 2+,Mn 2+and Fe 3+,Al 3+were used as materials,the catalytic effect of Co/Fe-LDO and Co/Al-LDO catalysts is better than others.Aniline oxidized by catalyst/ozone systems were both based on the first-order reactions.The catalytic effect of Co/Fe-LDO and Co/Al-LDO prepared by reverse co-precipitation method is better than that of forward co-precipitation method.The SEM showed that the obvious layered structure and rough surface in the two kinds of layered double oxides ozone catalysts by reverse co-precipitation method.

关 键 词：层状复合金属氧化物 催化动力学 苯胺废水 臭氧催化剂 

分 类 号：X703.1[环境科学与工程—环境工程]