Effect of Reaction Conditions on Crystals in the Reaction Crystallization of Lanthanum Oxalate

란타늄 옥살레이트 반응성 결정화에서 반응조건에 따른 결정입자 연구

  • Kim, Hong-Ju (Department of Chemical Engineering Kyung Hee University) ;
  • Kim, Woon-Soo (Department of Chemical Engineering Kyung Hee University) ;
  • Kim, Woo-Sik (Department of Chemical Engineering Kyung Hee University)
  • 김홍주 (경희대학교 화학공학과) ;
  • 김운수 (경희대학교 화학공학과) ;
  • 김우식 (경희대학교 화학공학과)
  • Received : 1998.05.27
  • Accepted : 1998.09.07
  • Published : 1998.12.10


Effects of reaction conditions such as power input and feeding time and feeding mode of reactants on the reaction crystallization of lanthanum oxalate in semi-batch reactor were investigated experimentally. Even though the crystal size distribution of lanthanum oxalate was always monomodal, its mean crystal size was significantly varied with the reaction conditions. As the power input and reactant feeding rate increased, the mean crystal size was reduced and the relative induction time was prolonged. The mean crystal size produced in oxalic acid feeding mode was smaller than that in lanthanum chloride feeding mode, but the trend of the relative induction time with the feeding mode was reverse to that of the mean crystal size. The crystal morphology of lanthanum oxalate, which was produced within the ranges of the reaction conditions in our experiment, was maintained as a needle shape.


  1. 재료 v.9 김우식
  2. 화학공학 v.36 이상구;정왕모;김우식;최창균
  3. 제12회 자원활용·소재 Workshop 朴哲秀
  4. Bull. Chem. Soc. Japan v.66 S. Hamada;Y. Kudo;H. Matsuda
  5. Macromolecules v.22 J. Cohen;Z. Priel
  6. J. Colloid and Interface Sci. v.52 S. T. Liu;G. H. Nancollas
  7. J. Crystal Growth v.44 W. H. Leung;G. H. Nancollas
  8. J. Coll. Sci. v.13 E. R. McCartney;A. E. Alexander
  9. AlChE v.37 B. Marcant;R. David
  10. AlChE v.34 R. V. Mohanty;S. Bhandarkar;B. Zuromski;R. Brown;J. Estrin
  11. Chem. Eng. Sci. v.38 R. Pohorecki;J. Baldyga
  12. Chem. Eng. Technol v.12 no.1 N. Tavare
  13. Chem. Eng. Sci. v.40 P. H. Karpinski
  14. AIChE v.36 D. E. Fitchett;J. M. Tarbell
  15. Chem. Eng. Comm v.101 W. S. Kim;J. M. Tarbell
  16. Chem. Eng. Comm v.146 W. S. Kim;J. M. Tarbell
  17. Crystallization(3rd ed.) J. W. Mullin
  19. Theory of Particular Processes(2nd ed.) A. D. Randolph;M. A. Larson
  20. Unit Operations of Chemical Engineering(4th ed.) W. L. McCabe;J. C. Smith;P. Harriott
  21. Reviews in Chemical Engineering v.7 J. Villermaux
  22. 한국결정성장학회지 v.6 이종석;김운수;김우식;김용욱;김준수;장희동
  23. CHEMISTRY(6th ed.) T. L. Brown;H. E. LeMay, Jr;B. E. Bursten
  24. Quantitative Chemical Analysis(3rd ed.) D. C. Harris