Preparation of high-purity thorium by solvent extraction with di-(2-ethylhexyl) 2-ethylhexyl phosphonate
文献类型：期刊论文
| 作者 | Wang YL ; Li YL ; Liao WP ; Li DQ |
| 刊名 | journal of radioanalytical and nuclear chemistry
 |
| 出版日期 | 2013 |
| 卷号 | 298期号:3页码:1651-1657 |
| 关键词 | RARE EARTHS(III) TH(IV) CERIUM(IV) DEHEHP |
| ISSN号 | 0236-5731 |
| 通讯作者 | li dq |
| 中文摘要 | the extraction behavior of thorium(iv) by di-(2-ethylhexyl) 2-ethylhexyl phosphonate (dehehp, b) from nitric acid media has been investigated. the influence factors including the concentration of hno3, salting-out reagents, temperature, the concentration of metal ions and dehehp have been examined systematically. a possible extraction mechanism is proposed and the extracted species as th(no3)(4)center dot 2b ((o)) is confirmed by the slope analysis method. the extraction equilibrium constants (k (ex)) and thermodynamic parameters (delta g, delta h and delta s) were calculated under the present experimental conditions. dehehp shows a high selectivity of thorium(iv) over rare earths(iii). stripping study indicates that thorium can be completely stripped by distilled water from the th-loaded dehehp. furthermore, a solvent extraction process including six extraction stages, six scrubbing stages, and six stripping stages was designed for the preparation of highly pure thorium from thorium concentrate with dehehp as extractant in laboratory scale, and finally thorium product can be obtained with a purity of 99.999 % and a yield of 98 %. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000327248400023 |
| 公开日期 | 2014-04-15 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/49435]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Wang YL,Li YL,Liao WP,et al. Preparation of high-purity thorium by solvent extraction with di-(2-ethylhexyl) 2-ethylhexyl phosphonate[J]. journal of radioanalytical and nuclear chemistry,2013,298(3):1651-1657. |
| APA | Wang YL,Li YL,Liao WP,&Li DQ.(2013).Preparation of high-purity thorium by solvent extraction with di-(2-ethylhexyl) 2-ethylhexyl phosphonate.journal of radioanalytical and nuclear chemistry,298(3),1651-1657. |
| MLA | Wang YL,et al."Preparation of high-purity thorium by solvent extraction with di-(2-ethylhexyl) 2-ethylhexyl phosphonate".journal of radioanalytical and nuclear chemistry 298.3(2013):1651-1657. |
入库方式： OAI收割
来源：长春应用化学研究所
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