CeO<sub>2</sub>-活性炭催化臭氧化降解水中草酸的研究

doi:10.11894/1005-829x.2016.36(8).055

工业水处理 ›› 2016, Vol. 36 ›› Issue (8): 55-59. doi: 10.11894/1005-829x.2016.36(8).055

CeO₂-活性炭催化臭氧化降解水中草酸的研究

杨郭¹, 曾凡炎¹, 王淑静², 马燮¹, 黄斌¹

1. 四川理工学院材料与化学工程学院, 四川自贡 643000;
2. 北京大学定量生物学中心, 北京 100871

收稿日期:2016-07-13 出版日期:2016-08-20 发布日期:2016-08-26
作者简介:杨郭(1980-),高级实验师,博士,硕士生导师,E-mail:yangguo0813@163.com。
基金资助:
四川省教育厅科研基金（14ZB0209）；四川理工学院培育项目（2013PY02）

Research on the degradation of oxalic acid in water by CeO₂-activated carbon catalytic ozonation

Yang Guo¹, Zeng Fanyan¹, Wang Shujing², Ma Xie¹, Huang Bin¹

1. College of Materials and Chemical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China;
2. Center for Quantitative Biology, Peking University, Beijing 100871, China

Received:2016-07-13 Online:2016-08-20 Published:2016-08-26

摘要/Abstract

摘要：

利用CeO₂的储氧和释氧能力，以高活性的活性炭作为催化剂载体，采用等体积浸渍法制备CeO₂-活性炭催化剂。分别用氮气低温吸附/脱附、XRD、XPS对CeO₂-活性炭催化剂进行表征。以CeO₂-活性炭作为催化剂，草酸作为模型化合物，催化臭氧化降解草酸的去除率达到77%。Ce组分的加入能显著提高草酸的去除率。Ce不仅能够提高反应体系中羟基自由基的浓度，还有利于O₃分子直接氧化草酸。CeO₂-活性炭催化剂经过3次重复使用后，草酸去除率保持在70%以上，具有较好的稳定性。

关键词: 草酸, 活性炭, 二氧化铈, 臭氧化, 催化降解

Abstract:

Utilizing the oxygen storage and oxygen release capacities of CeO₂,and using activated carbon with high activity as catalyst carriers,CeO₂-activated carbon catalyst has been prepared by isometric impregnation method. N₂ low temperature adsorption/desorption,XRD and XPS are used respectively for its characterization. Using CeO₂-activated carbon(CeO₂-AC) as catalyst,oxalic acid as model compound,the removing rate of oxalic acid degraded by catalytic ozonation reaches 77%. Adding Ce component can improve the removing rate of oxalic acid obviously. Ce can not only improve the concentration of hydroxyl radicals in the reaction system,but also is advantageous to oxalic acid to be oxidized directly by O₃ molecules. After CeO₂-AC has been used three times repeatedly,the removing rate of oxalic acid stays at above 70%,having better stability.

Key words: oxalic acid, activated carbon, cerium oxide, ozonation, catalytic degradation

中图分类号:

X703

杨郭, 曾凡炎, 王淑静, 马燮, 黄斌. CeO₂-活性炭催化臭氧化降解水中草酸的研究[J]. 工业水处理, 2016, 36(8): 55-59.

Yang Guo, Zeng Fanyan, Wang Shujing, Ma Xie, Huang Bin. Research on the degradation of oxalic acid in water by CeO₂-activated carbon catalytic ozonation[J]. INDUSTRIAL WATER TREATMENT, 2016, 36(8): 55-59.

https://www.iwt.cn/CN/Y2016/V36/I8/55

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CeO₂-活性炭催化臭氧化降解水中草酸的研究

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CeO2-活性炭催化臭氧化降解水中草酸的研究

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CeO₂-活性炭催化臭氧化降解水中草酸的研究

Research on the degradation of oxalic acid in water by CeO₂-activated carbon catalytic ozonation