发明名称 |
METHOD OF PREPARING THALLIUM (III) OXIDE |
摘要 |
recovery and purification of thallium including isotope enriched thallium prepared by electromagnetic separation method. SUBSTANCE: pure metallic thallium is dissolved in concentrated nitric acid by addition of concentrated hydrochloric acid at ratio of 3:1, and solution is maintained at 80-90 C till it becomes disclosed. Thallium (I) is oxidized to thallium (III). Thallium hydroxide is deposited by addition of ammonia. After washing and filtration, Tl2O3xH2O dehydration is carried out at 200-300 C. Method makes it possible to recover 99.6-99.8 of thallium in the form of oxide. Method uses standard equipment, inexpensive reactants and insignificant amount of electric energy. EFFECT: more efficient preparation method. 6 ex
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申请公布号 |
RU2162442(C1) |
申请公布日期 |
2001.01.27 |
申请号 |
RU20000117404 |
申请日期 |
2000.07.03 |
申请人 |
EHLEKTROKHIMPRIBOR";EHLEKTROKHIMPRIBOR |
发明人 |
TATARINOV A.N.;IZOVSKAJA L.N.;KISELEVA T.G.;MONASTYREV JU.A.;SITNIKOVA L.A. |
分类号 |
C01G15/00;(IPC1-7):C01G15/00 |
主分类号 |
C01G15/00 |
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