| 色谱法测定低比表面积的研究——低温动态氪吸附法 |
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| 引用本文： | 郑淑娴,汪仁.色谱法测定低比表面积的研究——低温动态氪吸附法[J].医学教育探索,1988(3). |
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| 作者姓名： | 郑淑娴 汪仁 |
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| 作者单位： | 华东化工学院工业催化研究所
(郑淑娴)，华东化工学院工业催化研究所(汪仁) |
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| 摘 要： | 以氪为吸附质,进行了文题的研究。结果表明:当样品管容积小于15cm~3时,在BET相对压力范围内热扩散效应可以忽略;试样的表面积小于0.5m~2对,20分钟即能达到吸附平衡;比表面积为0.01—5m~2/g的试样都能得到接近高斯分布的峰形,不出现反常峰,具有良好的BET直线。
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| 关 键 词： | 氪 表面积 气相色谱 动态法 吸附 比表面积 |
Gas chromatographic measurement of low specific surface area by dynamic adsorption of krypton at low temperature |
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| Zheng Shuxian Wang Ren.Gas chromatographic measurement of low specific surface area by dynamic adsorption of krypton at low temperature[J].Researches in Medical Education,1988(3). |
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| Authors: | Zheng Shuxian Wang Ren |
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| Institution: | Research Institute of Industrial Catalysis |
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| Abstract: | Krypton was used as adsorbent to measure low specific surface area by dynamic adsorption at low temperature. The results showed that: when the volume of the sample tube is less than 15cm~3, the effect of thermal diffusion can be neglected in the range of BET relative pressure. When the total surface area of the sample is less than 0.5m~2, it takes twenty minutes to reach adsorption equilibrium. The peak shape would take the form of Garssion distribution curve, and abnormal signals would not occur for the samples having 0.05 to 5m~2/g specific surface area, Experimental, data perfectly fit the BET equation. |
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| Keywords: | Krypton surface area gas chromatography dynamic method adsorption specific surface area |
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