| 碳纳米管及C60和石墨氧化动力学机理函数的分析 |
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| 引用本文： | 吕德义, ,许可, ,徐铸德, ,葛忠华, ,李小华. 碳纳米管及C60和石墨氧化动力学机理函数的分析[J]. 中国化学工程学报, 2005, 13(3): 355-360 |
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| 作者姓名： | 吕德义 许可 徐铸德 葛忠华 李小华 |
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| 作者单位： | State Key Laboratory Breeding Base of Green-chemistry Synthesis TechnologyResources & Environment Catalysis Institute，Zhejiang University of Technology，Hangzhou 310032，China，State Key Laboratory Breeding Base of Green-chemistry Synthesis TechnologyResources & Environment Catalysis Institute，Zhejiang University of Technology，Hangzhou 310032，China，Department of ChemistryZhejiang University，Hangzhou 310027，China，State Key Laboratory Breeding Base of Green-chemistry Synthesis TechnologyResources & Environment Catalysis Institute，Zhejiang University of Technology，Hangzhou 310032，China，State Key Laboratory Breeding Base of Green-chemistry Synthesis TechnologyResources & Environment Catalysis Institute，Zhejiang University of Technology，Hangzhou 310032，China |
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| 基金项目： | Supported by the Natural Science Foundation of Zhejiang Province (No. 500105). |
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| 摘 要： | The oxidation of carbon nanotubes, C60 and graphite was studied by thermogravimetric (TG) analysis and differential thermal analysis (DTA) technique, and the oxidation kinetic models of three carbon materials studied were analyzed by mechanism-function method. The results indicate that three carbon species adopt different oxidation mechanisms due to their different structures. The oxidation of carbon nanotubes with cylindrical structure follows contracting volume reaction mechanism [R3 mechanism, 1-(1-α)1/3 = kt], indicating that the oxidation of carbon nanotubes takes place from the ends to the center. For graphite with planar sandwich structure, the oxidation starts at the edges initially and gradually moves toward the center, which corresponds to contracting area phase boundary reaction mechanism [R2 mechanism, 1-(1-α)1/2 = kt]. The oxidation of C60 with spherical structure, however, is complex and apparently cannot be illustrated with a single kinetic model. The values of apparent activation energy
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| 关 键 词： | C60 碳纳米管 氧化作用 动力学分析 石墨 |
| 修稿时间： | |
Kinetic Analysis of Oxidation of Carbon Nanotubes, C60 and Graphite Using Mechanism-Function Method |
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| LU Deyi,XU Ke. Kinetic Analysis of Oxidation of Carbon Nanotubes, C60 and Graphite Using Mechanism-Function Method[J]. Chinese Journal of Chemical Engineering, 2005, 13(3): 355-360 |
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| Authors: | LU Deyi XU Ke |
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| Abstract: | |
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| Keywords: | oxidation mechanism carbon nanotubes kinetic analysis activation energy |
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