| 改进的苯胺萃取法提纯三氧化钨 |
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| 引用本文： | 顾功凯,姚宝书.改进的苯胺萃取法提纯三氧化钨[J].河北大学学报(自然科学版),1984(2). |
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| 作者姓名： | 顾功凯 姚宝书 |
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| 作者单位： | 河北大学化学系
(顾功凯)，天津轻工业学院(姚宝书) |
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| 摘 要： | 用改进的苯胺萃取法研究了三氧化钨的提纯,硫酸肼用做还原剂,用EDTA掩蔽钼氧基离子,在PH4条件下以苯胺萃取Hw_6O_(21)~(5-)离子。同时,该法采用了氨水反萃取,热过滤和结晶时差,结果产品中WO_3含量高达99.92％,钼含量由0.1％下降到0.00061％。
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Purifying of the Tungsten Trioxide with Improved Extractive Method of the Amino-Benzene |
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| Abstract: | Puvifying of the tungsten trioxide was investigated by improved extrac--tive method of amino-benzene. Hydraz'ne sulfate was used as reducing agent, Produced molybdenyl ion was masked by EDTA, Hw6o251- ion at pH 4 was extracted by am ino-benzene, Besides, this method was adopted by reext raction with ammonia water, by hot filtration and by early crystallization. The result was that the product of tungsten trioxide quantity reached up to 99.92% and the content of Molybdenum reduced from 0.1% to 0.00061%. |
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