Synergistic extraction and separation of yttrium from heavy rare earths using mixture of sec-octylphenoxy acetic acid and bis(2,4,4-trimethylpentyl)phosphinic acid
文献类型：期刊论文
| 作者 | Sun, XB; Zhao, JM; Meng, SL; Li, DQ |
| 刊名 | Analytica chimica acta
 |
| 出版日期 | 2005-03-21 |
| 卷号 | 533期号:1页码:83-88 |
| 关键词 | Synergistic extraction Yttrium (y) Heavy rare earths Cyanex272 Ca-12 Separation factors |
| ISSN号 | 0003-2670 |
| DOI | 10.1016/j.aca.2004.11.005 |
| 通讯作者 | Li, dq() |
| 英文摘要 | Synergistic extraction and separation of yttrium (y) from heavy rare earths (hre) in chloride medium using mixture of sec-octylphenoxy acetic acid (ca-12. ha) and bis(2,4,4-trimethylpentyl)phosphinic acid (cyanex272, hl) in n-heptane has been investigated. the synergistic enhancement coefficients, r-max, were obtained for ho3+ (5.12), y3+ (5.34), er3+ (7.04), tm3+ (7.50), yb3+ (13.12) and lu3+ (17.58). the separation factors (sf) between y3+ and hre were obtained, and it was found that er3+ would form the new complex as erh(6)a(4)l(5) in the mixture system. a cation exchange mechanism was proposed. the equilibrium constant, formation constant and thermodynamic parameters such as delta g = -18.48 kj/mol, delta h = -1.36 kj/mol and delta s= 0.058 kj/mol were determined. the ca-12 and cyanex272 mixture system showed higher extraction efficiency, larger separation factors as well as excellent stripping behaviors. the application potential of the mixture system to separate y from hre has been discussed. (c) 2004 elsevier b.v. all rights reserved. |
| WOS关键词 | THENOYLTRIFLUOROACETONE ; 1,10-PHENANTHROLINE ; CYANEX-272 |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Analytical |
| 语种 | 英语 |
| WOS记录号 | WOS:000227894600010 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2377062 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Li, DQ |
| 作者单位 | Chinese Acad Sci, Grad Sch, Changchun Inst Appl Chem, Key Lab Rare Earth Chem & Phys, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, XB,Zhao, JM,Meng, SL,et al. Synergistic extraction and separation of yttrium from heavy rare earths using mixture of sec-octylphenoxy acetic acid and bis(2,4,4-trimethylpentyl)phosphinic acid[J]. Analytica chimica acta,2005,533(1):83-88. |
| APA | Sun, XB,Zhao, JM,Meng, SL,&Li, DQ.(2005).Synergistic extraction and separation of yttrium from heavy rare earths using mixture of sec-octylphenoxy acetic acid and bis(2,4,4-trimethylpentyl)phosphinic acid.Analytica chimica acta,533(1),83-88. |
| MLA | Sun, XB,et al."Synergistic extraction and separation of yttrium from heavy rare earths using mixture of sec-octylphenoxy acetic acid and bis(2,4,4-trimethylpentyl)phosphinic acid".Analytica chimica acta 533.1(2005):83-88. |
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来源：中国科学院大学
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