Research on the preparation of CuO/Al2O3 and the mechanism of nitrobenzene degradation

doi:10.11894/1005-829x.2018.38(5).015

INDUSTRIAL WATER TREATMENT ›› 2018, Vol. 38 ›› Issue (5): 15-20. doi: 10.11894/1005-829x.2018.38(5).015

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Research on the preparation of CuO/Al₂O₃ and the mechanism of nitrobenzene degradation

Liu Qiang¹, Ding Yiming¹, Li Jinwei², Jiang Chengchun²

1. College of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China;
2. Urban Water Benign Engineering Research and Development Center, Shenzhen Polytechnic, Shenzhen 518055, China

Received:2018-02-05 Online:2018-05-20 Published:2018-05-29

CuO/Al₂O₃催化剂制备及降解硝基苯机理的研究

刘强¹, 丁一鸣¹, 李锦卫², 姜成春²

1. 沈阳建筑大学市政与环境工程学院, 辽宁沈阳 110168;
2. 深圳职业技术学院, 城市水良性循环工程研发中心, 广东深圳 518055

通讯作者: 李锦卫,博士,副研究员。E-mail:lijinwei@szpt.edu.cn。 E-mail:lijinwei@szpt.edu.cn
作者简介:刘强(1966-),硕士,教授。电话:13332471099。E-mail:771780475@qq.com。
基金资助:
国家自然科学基金项目（51378316）；深圳市科技创新委员会项目（JCYJ20150630114140635）

Abstract

Abstract: The CuO/Al₂O₃ supported catalyst prepared by deposition-precipitation method has been characterized by N₂ adsorption,scanning electron microscope and X-ray diffraction. The research on the efficiency and mechanisms of nitrobenzene degradation in a heterogeneous Fenton-like catalytic system consisting of CuO/Al₂O₃ catalyst and H₂O₂ has been implemented. The experimental results show that the nitrobenzene removing rate is 84.73% under optimal conditions. The amount of Cu²⁺ dissolution is comparatively low in the reaction process,and the heterogeneous Fen-ton-like reaction plays a leading role. The main intermediate products in the nitrobenzene degradation process are the substances,such as aniline,phenol,organic substances with amino-group and so on,and the final products are mi-cro-molecular substances,which can improve the biodegradability of wastewater.

Key words: catalyst, Fenton-like, nitrobenzene, degradation, free radical

摘要： 以沉积沉淀法制备了负载型CuO/Al₂O₃催化剂，利用N₂吸附、扫描电镜和X射线衍射等技术进行了表征。在CuO/Al₂O₃催化剂与H₂O₂构建的多相类Fenton催化体系内对硝基苯的降解效能和机制进行了研究。结果表明，在最优条件下，硝基苯的去除率达到84.73%；反应过程中溶铜量很少，且多相类Fenton反应起主导作用；降解硝基苯过程中的主要中间产物有苯胺、苯酚、氨基类有机物等物质，最终产物为酯类有机物等小分子物质，提高了污水的可生化性。

关键词: 催化剂, 类Fenton, 硝基苯, 降解, 自由基

CLC Number:

X703.1

Liu Qiang, Ding Yiming, Li Jinwei, Jiang Chengchun. Research on the preparation of CuO/Al₂O₃ and the mechanism of nitrobenzene degradation[J]. INDUSTRIAL WATER TREATMENT, 2018, 38(5): 15-20.

刘强, 丁一鸣, 李锦卫, 姜成春. CuO/Al₂O₃催化剂制备及降解硝基苯机理的研究[J]. 工业水处理, 2018, 38(5): 15-20.

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Research on the preparation of CuO/Al₂O₃ and the mechanism of nitrobenzene degradation

CuO/Al₂O₃催化剂制备及降解硝基苯机理的研究

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