| 金属离子改性活性炭对二氯甲烷/三氯甲烷吸附性能的影响 |
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| 引用本文： | 夏启斌,黄思思,肖利民,张伟,李忠.金属离子改性活性炭对二氯甲烷/三氯甲烷吸附性能的影响[J].功能材料,2009,40(11). |
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| 作者姓名： | 夏启斌 黄思思 肖利民 张伟 李忠 |
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| 作者单位： | 华南理工大学,化学与化工学院,传热强化与过程节能教育部重点实验室,广东,广州,510640 |
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| 基金项目： | 国家自然科学基金重点项目，广东省科技攻关项目 |
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| 摘 要： | 主要研究了不同金属改性活性炭对三氯甲烷和二氯甲烷吸附性能的影响.采用浸渍法将4种不同金属离子负载改性活性炭,测定了三氯甲烷和二氯甲烷在改性活性炭上的吸附透过曲线,应用软硬酸碱理论分析和讨论了活性炭表面负载不同金属离子对二氯甲烷吸附性能的影响.结果表明,不同金属负载活性炭对三氯甲烷和二氯甲烷的吸附能力依次为:Fe(Ⅲ)-AC＞Mg(Ⅱ)-AC＞Cu(Ⅱ)-AC＞AC＞Ag(I)-AC,根据软硬酸碱理论分类,三氯甲烷和二氯甲烷属于硬碱,当活性炭表面负载硬酸类金属离子Fe~(3+)、Mg~(2+),增大了活性炭表面的硬酸性,对三氯甲烷和二氯甲烷的吸附能力加强,Ag~+属于软酸,它的负载局部增强了活性炭表面的软酸性,降低了其对三氯甲烷和二氯甲烷的吸附能力.
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| 关 键 词： | 活性炭 二氯甲烷 三氯甲烷 金属离子 软硬酸碱理论 |
Effects of metal ions loaded onto activated carbons on adsorption capability of dichloromethane/trichloromethane |
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| XIA Qi-bin,HUANG Si-si,XIAO Li-ming,ZHANG Wei,LI Zhong.Effects of metal ions loaded onto activated carbons on adsorption capability of dichloromethane/trichloromethane[J].Journal of Functional Materials,2009,40(11). |
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| Authors: | XIA Qi-bin HUANG Si-si XIAO Li-ming ZHANG Wei LI Zhong |
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| Affiliation: | XIA Qi-bin,HUANG Si-si,XIAO Li-ming,ZHANG Wei,LI Zhong(The Key Lab. of Enhanced Heat Transfer and Energy Conversation Ministry of Education College of Chemical and Chemical Engineering,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | The effects of metal ions loaded onto activated carbons on adsorption capability of dichloromethane/ trichloromethane were investgated. Four kinds of metal ions loaded activated carbons were prepared by the impregnated method. Breakthrough curves for dichloromethane/ trichloromethane adsorption on modified activated carbons in a fixed bed were measured. The effects of metal ions loaded onto activated carbons on adsorption capability of dichloromethane/ trichloromethane was discussed with the help of the har... |
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| Keywords: | activated carbons dichloromethane trichloromethane metal ions HSAB |
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