| 臭氧催化氧化降解苯胺的机理 |
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| 引用本文： | 宁军,陈立伟,蔡天明.臭氧催化氧化降解苯胺的机理[J].环境工程学报,2013,7(2):551-556. |
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| 作者姓名： | 宁军 陈立伟 蔡天明 |
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| 作者单位： | 南京农业大学资源与环境科学学院环境工程系,南京,210095 |
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| 基金项目： | 江苏省省级环保科技项目(2010005) |
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| 摘 要： | 对臭氧单独氧化和臭氧催化氧化下的苯胺降解效率进行了比较,并通过液质联机分析了氧化过程中产物变化情况。实验结果表明,催化剂MnO2-CuO-CeO2/沸石的添加能有效地提高臭氧氧化苯胺的降解率,当苯胺初始浓度为200mg/L,反应20 min后,苯胺的去除率由原来的75%提高到89%;通过LC-MS分析,臭氧催化氧化苯胺降解过程中代谢产物依次为对亚胺醌、对苯醌、马来酸和草酸,并由此推断出了臭氧催化氧化降解苯胺的途径。
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| 关 键 词： | 苯胺 MnO2-CuO-CeO2/沸石催化 臭氧氧化 降解途径 |
Degradation mechanism of aniline by ozonation catalysis |
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| Ning Jun,Chen Liwei and Cai Tianming.Degradation mechanism of aniline by ozonation catalysis[J].Techniques and Equipment for Environmental Pollution Control,2013,7(2):551-556. |
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| Authors: | Ning Jun Chen Liwei and Cai Tianming |
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| Institution: | Department of Environmental Engineering, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China;Department of Environmental Engineering, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China;Department of Environmental Engineering, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China |
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| Abstract: | We compared the degradation efficiency of aniline by ozonation alone and catalyzed ozonation, and ananylzed the change of products in oxidation process by LC-MS. The results showed that MnO2-CuO-CeO2/zeolite catalyst could effectively improve the degradation rate of aniline by ozonation, and when original aniline concentration was 200 mg/L, the removal efficiency of aniline increased from 75% to 89% after 20 min; LC-MS analysis showed that the degradation products of aniline by catalyzed ozonation are successively p-benzoquinonimine, p-benzoquinone, maleic acid and oxalic acid; and according to that, the degradation pathway of aniline by ozonation is inferred. |
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| Keywords: | aniline MnO2-CuO-CeO2/zeolite catalysis ozonation degradation pathway |
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