Separation of High Purity Terbium Using Extraction Chromatography

추출 크로마토그래피를 이용한 고순도 테르븀의 분리

  • Received : 1999.04.01
  • Published : 1999.10.25

Abstract

Extraction chromatography was used to scarch optimum separation conditions of terbium. Stationary phase was 2-ethylhexyl-2-ethylhexyl phosphonic acid(HEH[EHP])levextrel (-100~+150 mesh), column size was ${\Phi}20{\times}530mm$ and kept constantly temperature at $50^{\circ}C$, adsorption flow rate of $0.2mL/cm^2{\cdot}min$, elution flow rate of $1.0mL/cm^2{\cdot}min$, column diameter to packing height of 1:15. But to search optimum separation conditions of terbium, it changed the eluent acidity, the loading weight of sample. the composition of sample. In conclusion, acidity was 0.6 N HCl, loading weight of sample was about 5% and composition of sample was $Gd_2O_3(20%)+Tb_4O_7(60%)+Dy_2O_3(20%)$. Moreover purity of separated terbium by ICP-AES analysis was 99.98% in yield of 99.99%.

Keywords

extractioll chromatography;terhlum;separatioll factor;eluent acidity

References

  1. Anal. Xci. v.13 Q. Wang;K. Tsunoda;H. Akaiwa
  2. CNpat. 85101874 추출 크로마토그래피 방법으로 고순도 $Tm_2O-3$$Lu_2O_3$의 분리 朴哲秀
  3. J.of the Chinese Rare Earth Socity. v.3 no.3 金正愛
  4. 中國 分析化學 v.17 朴哲秀;黃本立.
  5. 中國 分析化學 v.16 朴哲秀;黃本立.
  6. J. Chromatogr. v.16 R. J. Sochacka;S. Siekierski
  7. Z. Phys. v.B64 J. G. Bendnorz;K. A. Muller
  8. J. Korean. Chem. Soc. v.30 K. W. Cha;S. W. Hong;K. W. Kim
  9. J. Chromatogr. v.12 T. B. Pierce;P. E. Peck;R. S. Hobbs
  10. Anal. Sci. & Tech. v.10 no.1 K. W. Cha;C. I. Park;B. D. Chang;S. W. Hong
  11. Anal. Sci. v.12 Q. Wang;K. Tsunoda;H. A kaiwa;T. Watanabe
  12. 중국 희토류 학회 제2차 seminar 논문집 v.2 no.상
  13. Research Report of Honam Institute of Metallogy The separation of rare earth impurities interbium oxide G. X. Han;D. S. Lu
  14. Fenxi huaxue (Chinese Analytical Chemistry) v.11 no.7 C. L. Peng;Y. D. Cui;Q. X. Song
  15. Fenxi huaxue(Chinese Analytical Chemistry) v.20 C. L. Peng
  16. J. Chromatogr. v.17 I. Fidelis;S. Siekierski
  17. J. Inorg. Nucl. Chem. v.18 D. F. Peppard;G. W. Mason;I. Hucher
  18. 1-th symposium for rare earth analysisin China v.2 no.19 Separation and determination of 14 impurities rare earthsin high purity terbium oxide H. Z. Liu
  19. J. Magn. Mater. v.87 T. M. D. Coey;Hong Sun
  20. 稀土 治金工業出版社
  21. Fluorescene Lamp Phosphors K. H. Bulter.
  22. J. Inorg. Nucl. Chem. v.4 d. F. Peppard;G. W. Mason;W. Driscoil