| 红外光谱法测定尿素生产中脱氢催化剂的 S(Ⅵ)含量 |
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| 引用本文： | 罗大恒. 红外光谱法测定尿素生产中脱氢催化剂的 S(Ⅵ)含量[J]. 分析化学, 1990, 0(1) |
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| 作者姓名： | 罗大恒 |
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| 作者单位： | 中国科学院兰州地质研究所 兰州，730000 |
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| 摘 要： | 本文介绍一个用红外光谱法测定尿素生产装置内使用过的脱氢催化剂中S(Ⅵ)的含量(以SO_4~-形式存在)。取Al_2(SO_4)_3作标样,溴化钾压片法制备13mm样片,用补偿法测定1120cm~(-1)SO_4~(2-)吸收峰的光密度,绘制A_(1120)～S(Ⅵ)标准曲线。样片中SO_4~(2-)含量在1mg以内符合朗伯—比尔定律。当脱氢催化剂中S(Ⅵ)含量在20％以内,方法准确度为3％,平均偏差最大为0.20。文中并介绍了操作误差的来源及克服办法。
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| 关 键 词： | 尿素 催化剂 Al_2(SO_4)_3 红外光谱 |
Determination of Sulfate in Dehydrogenating Catalyst Used in Urea Production by Infrared Spectrometry |
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| Luo Daheng. Determination of Sulfate in Dehydrogenating Catalyst Used in Urea Production by Infrared Spectrometry[J]. Chinese Journal of Analytical Chemistry, 1990, 0(1) |
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| Authors: | Luo Daheng |
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| Abstract: | The title method is described. Al_2(SO_4)_3 is used as the standard, and the optical density at 1120cm~(-1) measured by compensation method is taken for quantitativeanalysis. The linear relation between sulfate contents and the optical density is obtained. Samples collected from a urea plant are pressed with KBr to form thin discs for analysis. The results show good accuracy and precision. |
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| Keywords: | Urea Catalyst Sulfate Infrared spectrometry |
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