| 高纯碲的制备 |
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| 引用本文： | 韩汉民. 高纯碲的制备[J]. 精细化工, 1997, 14(6): 55-57 |
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| 作者姓名： | 韩汉民 |
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| 作者单位： | 安徽师范大学化学系 |
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| 摘 要： | ０ｍｌ浓硝酸与１０ｇ碲反应得二氧化碲，溶于氢氧化钠溶液后加硝酸至ｐＨ＝４，析出二氧化碲，溶３５００ｇ二氧化碲于氢氧化钠溶液，过滤，在滤液中加０．２５ｇ九水硫化钠净化后，加３０％过氧化氢９ｍｌ，生成碲酸钠沉淀，溶碲酸钠于盐酸，通二氧化硫得９９９９９９％碲。
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| 关 键 词： | 碲，高纯，纯化 |
Preparation of High Purity Tellurium |
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| Abstract: | 10g Tellurium is treated with 40ml 65%～68% solution of nitric acid to give tellurium dioxide(Ⅰ),the Ⅰ is dissolved in sodium hydrate solution,precipitated by adding nitric acid at pH4, 35.00g Ⅰ is dissolved in sodium hydrate solution,the leaching liquor is mixed with 0.25g sodium sulphide,filtered,mixed with 9ml hydrogen peroxide 30% solution,and the precipitated sodium tellurate is dissolved in hydrochloric acid,treated with sulfur dioxide,and the resulting tellurium is separated.Purity of tellurium is 99.9999%. |
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| Keywords: | tellurium high purity purify |
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