以KCl为络合物配体,研究与Y2O3离子半径十分接近的Dy2O3 、Ho2O3和Er2O3的分离特性以及重稀土氧化物Ho2O3-Er2O3、Er2O3-Tm2O3、Tm2O3-Yb2O3及Yb2O3-Lu2O3之间的分离特性.实验结果表明,分离后主要沉积位置在中温和低温区.不同温度区域的最大分离系数分别为,SFY/Dy=11.49,SFY/Ho=15.28,SFY/Er=6.37.说明Y-Dy、Y-Ho及Y-Er控制一定的温度梯度完全可以达到分离目的.SFHo/Er=1.40,SFEr/Tm=2.21,SFTm/Yb=1.38,SFYb/Lu=4.33,高于传统的湿法分离系数.
参考文献
| [1] | 徐光宪.稀土[M].北京:冶金工业出版社,1995 |
| [2] | 徐光宪;倪嘉缵.神奇稀土-稀土科学基础研究[M].长沙:湖南科学技术出版社,1995 |
| [3] | West A R.Solid state chemistry and its application[M].John Wiley & Sons Ltd,1984 |
| [4] | Murase K;Shinozaki K;Hirashima Y et al.Rare earth separation using a chemical vapour transport process mediated by vapour complexes of the LnCl3-AlCl3 system[J].Journal of Alloys and Compounds,1993,198(01):31. |
| [5] | Murase K;Shinozaki K;Machida K et al.Mutual separation characteristics and mechanism for lanthanoid elements via gas phase complexes with alkaline metal and/or aluminium chorides[J].Bulletin of the Chemical Society of Japan,1992,65(10):2724. |
| [6] | ADACHI G;Murase K;Shinozaki K et al.Mutual separation characteristics for lanthonoid elements via gas phase complexes with alkaline chlorides[J].Chemistry Letters,1992,244(04):511. |
| [7] | Murase K;Machida K;Adachi G .Vapour phase extraction and mutual separation of rare earths from monazite using chemical vapour transport mediated by vapour complexes[J].Chemistry Letters,1994,249(09):1297. |
| [8] | Murase K;Ozaki T;Machida K et al.Extraction and mutual separation of rare earth from concentrates and crude oxides using chemical vapour transport[J].Journal of Alloys and Compounds,1996,233(15):96. |
| [9] | Murase K;Machida K;Adachi G .Recovery of rare metals from scrap of rare earth intermetallic by chemical vapour transport[J].Journal of Alloys and Compounds,1995,217(01):218. |
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