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摘要
以具有较高表面积的新鲜椰壳炭(SAC)为催化剂,采用盐酸和硝酸对SAC进行改性。考察改性前后的催化剂催化湿式过氧化物氧化(CWPO)降解间甲酚的反应效果。利用物理吸附、TPD-MS、拉曼光谱、XRF、SEM和XPS等对改性前后的催化剂进行表征。CWPO实验结果表明,活性炭催化剂表面含氧官能团(SOGs)在CWPO反应中发挥了重要作用,连续实验的情况下,硝酸处理的活性炭(SAC-N)表现出最佳的催化活性,反应1 800 h后间甲酚的转化率始终高达80%,平均TOC去除率达到25%以上。
Abstract
Fresh coconut shell carbon (SAC) with high surface area is modified by hydrochloric acid and nitric acid.Catalytic wet peroxide oxidation (CWPO) degradation of m-cresol is investigated by SAC catalysts before and after modification,respectively.SAC catalysts before and after modification are characterized by physical adsorption,TPD-MS,Raman spectroscopy,X-ray fluorescence analysis (XRF),SEM and XPS.CWPO experimental results indicate that the surface oxygen-containing functional groups (SOGs) of SAC catalyst play an important role in CWPO reaction.Under continuous experiments,the activated carbon (SAC-N) treated by nitric acid shows the best catalytic activity,over which the conversion rate of m-cresol has always remained as high as 80% after 1 800 h of reaction,and the average removal rate of TOC exceeds 25%.
关键词
CWPO
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催化剂
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间甲酚
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SOGs
Key words
catalytic wet peroxide oxidation
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catalyst
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m-cresol
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surface oxygen-containing functional groups
Author summay
王蕊(1994-),女,硕士生,研究方向为污水处理,501976826@qq.com
活性炭基材料催化湿式过氧化氢氧化降解间甲酚废水的研究[J].
现代化工, 2021, 41(2): 124-129 DOI:10.16606/j.cnki.issn0253-4320.2021.02.024