The Synthesis of Sodium Titanate by the Ion Exchange of H+/Na+ from Hydrous Titanium Dioxide and its Phase Transition

Hydrous Titanium Dioxide로부터 H+/Na+의 이온교환에 의한 티탄산나트륨의 합성 및 성전이

  • Lee, Jin-Sik (Dept. of Chem. Eng., College of Eng., Dankook Univ.) ;
  • Song, Yon-Ho (Dept. of Chem. Eng., College of Eng., Chosun Univ.) ;
  • Lee, Chul-Tae (Dept. of Chem. Eng., College of Eng., Dankook Univ.)
  • 이진식 (단국대학교 공과대학 화학공학과) ;
  • 송연호 (조선대학교 공과대학 화학공학과) ;
  • 이철태 (단국대학교 공과대학 화학공학과)
  • Received : 1998.03.24
  • Accepted : 1998.06.10
  • Published : 1998.08.10

Abstract

Fibrous $Na_xTi_nO_{2n+1}$ whisker was prepared by $H^+/Na^+$ ion-exchange on layered hydrous titanium dioxide ($H_2Ti_4O_9{\cdot}nH_2O$). The ion-exchange reaction was proceeded at 0.5~2.0 M NaOH solution. In the ion-exchange at 2.0 M NaOH solution, 73% of sodium was exchanged and the prepared $Na_xTi_nO_{2n+1}$ whisker was a fibrous crystal of about $10{\sim}20{\mu}m$ of length and about $0.7{\mu}m$ of diameter. The phase transition of the ion-exchange phases identified by the thermal analysis. The result showed that the $Na_xTi_nO_{2n+1}$ whisker was decomposed into $Na_2Ti_6O_{13}$ and $TiO_2$ in the temperature of $200{\sim}600^{\circ}C$.

Keywords

Sodium Titanate Whisker;Ion Exchange Reaction;Phase Transition

Acknowledgement

Supported by : 조선대학교

References

  1. セラミクス v.19 Y. Fujiki;T. Mitsuhashi
  2. 공업화학 v.8 K. T. Kun;J. S. Lee;C. H. Oh;C. T. Lee
  3. Mat. Res.Bull. v.20 S. Kikkaw;F. Yasuda;M. Koizumi
  4. Polyhedron v.2 H. Izawa;S. Kikkawa;M. Koizumi
  5. Ion Exchange Friedrich Heltterich
  6. 공업화학 v.8 C. T. Lee;J. S. Lee;D. W. Ko;H. J. Kim
  7. 공업화학 v.5 C. T. Lee;S. W. Kim;J. S. Lee;Y. M. Kim;K. T. Kun
  8. 공업화학 v.6 C. T. Lee;J. S. Lee;S. M. Lee;Y. S. Park
  9. Infrared spectra of inorganic compounds R. A. Nyquist;R. O. Kagel
  10. Bull. Chem. Soc. Jpn. v.58 T. Sasaki;Y. Watanabe;Y. Fujiki
  11. 공업화학 v.7 C. T. Lee;J. S. Lee;H. J. Kim
  12. セラミクス v.27 T. Sasaki;Y. Fujiki
  13. Inorg. Chem. v.28 T. Sasaki;Y. Komatsu;Y. Fujiki