| Effects of Citric Acid Concentration and Activation Temperature on the Synthesis of Carbon Nanotubes |
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| 作者姓名： | FengyiLi MinweiWang RongbinZhang RenzhongWei NiancaiPeng |
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| 作者单位： | [1]SupportedbyNationalNatureScienceFoundationofChinaandScienceandTechnologyBureauofJiangxiprovince [2]DepartmentofChemicalEngineering,NanchangUniversity,Nanchang330029,China [3]InstituteofAppliedChemistry,NanchangUniversity,Nanchang330047,China |
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| 摘 要： | A series of Ni-La-Mg catalyst samples were prepared by citric acid complex method, and carbonnanotubes were synthesized by catalytic decomposition of CH4 on these catalysts. The effects of the citricacid concentration and the activation temperature on catalytic activity were investigated by CO adsorption,TEM and XRD techniques. The experimental results showed that the particle size of the catalysts preparedthrough gel auto-combustion varied with the concentration of citric acid. Therefore carbon nanotubes with different diameters were obtained correspondingly. The effect of activation temperature on the activity of catalyst was negligible from 500 to 700℃, but it became pronounced at lower or higher temperatures.
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| 关 键 词： | 柠檬酸浓度 反应温度 合成 碳纳米管 镍 镧 镁 催化剂 甲烷 |
Effects of Citric Acid Concentration and Activation Temperature on the Synthesis of Carbon Nanotubes |
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| FengyiLi MinweiWang RongbinZhang RenzhongWei NiancaiPeng.Effects of Citric Acid Concentration and Activation Temperature on the Synthesis of Carbon Nanotubes[J].Journal of Natural Gas Chemistry,2004,13(2):101-106. |
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| Authors: | Fengyi Li Minwei Wang Rongbin Zhang Renzhong Wei Niancai Peng |
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| Institution: | 1. Institute of Applied Chemistry, Nanchang University, Nanchang 330047, China |
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| Abstract: | A series of Ni-La-Mg catalyst samples were prepared by citric acid complex method, and carbon nanotubes were synthesized by catalytic decomposition of CH4 on these catalysts. The effects of the citric acid concentration and the activation temperature on catalytic activity were investigated by CO adsorption,TEM and XRD techniques. The experimental results showed that the particle size of the catalysts prepared through gel auto-combustion varied with the concentration of citric acid. Therefore carbon nanotubes with different diameters were obtained correspondingly. The effect of activation temperature on the activity of catalyst was negligible from 500 to 700 ℃, but it became pronounced at lower or higher temperatures. |
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| Keywords: | carbon nanotubes preparation citric acid comples activation temperature CH4 |
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