| 苯并[a]芘在表面负载不同金属离子的SY-6活性炭上的脱附活化能 |
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| 引用本文： | 李晶,尹国强,李忠,奚红霞.苯并[a]芘在表面负载不同金属离子的SY-6活性炭上的脱附活化能[J].功能材料,2010,41(1). |
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| 作者姓名： | 李晶 尹国强 李忠 奚红霞 |
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| 作者单位： | 1. 仲恺农业工程学院,化学化工学院,广东,广州,510225
2. 华南理工大学,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： | 国家自然科学基金资助项目(20576041);;国家高技术研究发展计划(863计划)专项经费资助项目(2006AA06A310) |
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| 摘 要： | 主要研究了苯并a]芘在金属离子改性活性炭表面的脱附活化能,程序升温脱附实验测定了苯并a]芘在Fe3+,Zn2+和Ag+等金属改性活性炭上的脱附活化能,并应用软硬酸碱理论分析和讨论了其脱附活化能的差异。结果表明,苯并a]芘在改性活性炭上脱附活化能的顺序如下:Ag(Ⅰ)/ACACZn(Ⅱ)/ACFe(Ⅲ)/AC。和原始活性炭相比,Ag+增强了苯并a]芘和活性炭表面间的结合力,Zn2+和Fe3+减弱了苯并a]芘和活性炭表面间的结合力,并首次用软硬酸碱理论解释了试验结果。
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| 关 键 词： | TPD 苯并[a]芘 活性炭 金属离子 脱附活化能 HSAB酸碱理论 |
Desorption activation energy of benzo [a]pyrene on SY-6 activated carbons by modified different metal salt solutions |
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| LI Jing,LIN Guo-qiang,LI Zhong,XI Hong-xia.Desorption activation energy of benzo [a]pyrene on SY-6 activated carbons by modified different metal salt solutions[J].Journal of Functional Materials,2010,41(1). |
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| Authors: | LI Jing LIN Guo-qiang LI Zhong XI Hong-xia |
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| Affiliation: | 1. Zhongkai University of Agriculture and Engineering College of Chemistry and Chemical Engineering;Guangzhou 510225;China;2.College of Chemical and Energy Engineering;South China University of Technology;Guangzhou 510640;China |
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| Abstract: | This work is mainly concerned with the study of the effects of loading different metal ions onto activated carbon surfaces on the desorption activation energy of benzoa]pyrene (Ba]P). Temperature programmed desorption (TPD) experiments were conducted to measure the desorption activation energy,Ed,of Ba]P) on the activated carbons separately dopped with ions Fe3+,Zn2+ and Ag+,and the effects of loading metal ions onto the activated carbons on the interaction between Ba]P the carbon surfaces were discusse... |
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| Keywords: | TPD B[a]P DB[a h]A activated carbon metal ions desorption activation energy HSAB concept |
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