| 储氢材料67Mg29C3Ni1Al的放氢动力学研究 |
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| 引用本文： | 周仕学,谭琦,马怀营,于小翠,杨敏建. 储氢材料67Mg29C3Ni1Al的放氢动力学研究[J]. 功能材料, 2009, 40(3) |
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| 作者姓名： | 周仕学 谭琦 马怀营 于小翠 杨敏建 |
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| 作者单位： | 山东科技大学,化学与环境工程学院,山东,青岛,266510 |
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| 基金项目： | 国家自然科学基金，教育部留学回国人员科研启动基金 |
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| 摘 要： | 采用氢气反应球磨法,将煤基微晶碳及少量Ni和Al添加到镁粉中在1MPa氢气中球磨3h制得储氢材料67Mg29C3Ni1Al.放氢测试结果表明,温度越高,放氢速度越快,放氢量越大,数据拟舍得出放氢反应为表观一级反应.根据阿伦尼乌斯方程计算得出,在300～350℃范围内,放氢反应表观活化能为(138.0±6)kJ/mol.与储氢材料70Mg30C及纯MgH2相比,微晶碳和催化剂Ni、Al缩短了储氢材料的放氢时间,加快了放氢速度,提高了放氢量,降低了表观活化能,放氢动力学性能得到了改善.
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| 关 键 词： | 反应球磨 储氢材料 放氢动力学 活化能 催化剂 |
Dehydrogenation kinetics of hydrogen storage material 67Mg29C3Ni1Al |
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| ZHOU Shi-xue,TAN Qi,MA Huai-ying,YU Xiao-cui,YANG Min-jian. Dehydrogenation kinetics of hydrogen storage material 67Mg29C3Ni1Al[J]. Journal of Functional Materials, 2009, 40(3) |
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| Authors: | ZHOU Shi-xue TAN Qi MA Huai-ying YU Xiao-cui YANG Min-jian |
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| Affiliation: | College of Chemical and Environmental Engineering;Shandong University of Science and Technology;Qingdao 266510;China |
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| Abstract: | The hydrogen storage material 67Mg29C3Ni1Al was prepared by reactive ball milling using the mixed powder of coal-based crystallitic carbon,magnesium,nickel,and aluminum under the hydrogen pressure of 1MPa for 3h.The dehydrogenation test results showed that the dehydrogenation capacity was larger and the dehydrogenation speed was quicker with the increase of temperature.The apparent dehydrogenation reaction was the first order reaction which was obtained by data fitting.By means of Arrhenius equation,the app... |
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| Keywords: | reactive ball milling hydrogen storage material dehydrogenation kinetics activation energy catalyst |
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