Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지

Preparation of Monosized Titanium Dioxide Powder from TEOT

TEOT로부터 TiO₂단분산 분말 합성에 관한 연구

  • Published : 1988.05.01

⟨ Previous Next ⟩

Abstract

The controlled Ti(CO2H5)4 hydrolysis reactions for the synthesis of Spherical Monodispersed Titania powders are described. Increasing the concentration of TEOT and the molar ratio of water to TEOT in alcohol solution decrease the reaction time and the particle size. The reaction time is delalyed by increasing the chain length and the number of carbon branches of alcohol as a solvent. The prepared powders with an average diameter of 0.8μ and the spherical monodispersed transfer to Rutile phase at 550℃.

Ti(OC2H5)4 농도, 물량, 용매, alcohol을 변화시켜 가수분해 반응 특성을 검토하였으며 submicron 구형 단분산 분말을 합성하기 위하여 연구를 수행하였다. TEOT 농도와 물량이 증가하면 가수분해 반응속도는 빨라지며 생성입자 size는 작아졌다. TEOT 농도가 0.1~-0.2 M, 물량이 3배일때 양호한 구형 단분산 분말을 얻을 수 있었다. 용매 alcohol의 탄소가지수가 많거나 탄소가지수가 길어지면 가수분해 반응속도는 늦어짐을 알 수 있었다. 제조된 TiO2분말의 평균입경은 0.8㎛ 정도의 구형단분산 입자이며 가열시 결정상은 550℃ 이상에서 Rutile을 확인할 수 있었으며 입자 size도 0.6~0.7 u로 감소하였다.

Keywords

References

  1. Ann. Chim. Phys v.17 Synthesis of Silicon Tetra-iso-Amyloxide J.J. Ebelman;M. Bouquet
  2. J. Chem. Soc. v.280 Zirconium Alkoxides D.C. Bradley;W. Wardlaw
  3. J. Chem. Soc. The Preparation of Zirconium Alkoxides D.C. Bradley;F.M. ABC-EL Halim;E.A. Sadekand;W. Wardlaw
  4. J. Chem. Soc. Structural Chemistry of the Alkoxides, Ⅰ D.C. Bradley;R.C. Mehrotra;W. Wardlaw
  5. J. Chem. Soc. Structural Chemistry of the Alkoxides. Ⅱ D.C. Bradely;R.C. Mehrotra;W. Wardlaw
  6. J. Chem. Soc. Structural Chemistry of the Alkoxides. Ⅲ D.C. Bradely;R.C. Mehrotra;W. Wardlaw
  7. J. Chem. Soc. Hafnium Alkocides D.C. Bradely;R.C. Mehrotra;W. Wardlaw
  8. J. Indian Chem. Soc. v.31 Aluminium Amyloxides R.C. Mehrotra
  9. J. Chem. Soc. v.39 Synthesis of Dimethldialkoxysilanes R.C. Mehrotra;B.C. Pant
  10. Inorg. Chem v.5 Preparation and Some Properties of Yttrium, Dysprosium and Ytterium Alkoxides K.S. Mazdiyasni;C.T. Lynch;J.S. Smith
  11. Ceramics Int. v.12 Preparation of Alkoxides for the Synthesis of Ceramics H.K. Bowen
  12. Inorg. Chem v.9 Synthesis and Some Properties of Yttrium and Lanthanide Isopropoxides K.S. Mazdiyasni;L.M. Brown
  13. J. Am. Cer. Soc v.64 Agglomerate and Particle Size Effects On Sintering Yttria-Stabilized Zirconia W.H. Rhodes
  14. J. Mat. Soc v.12 Preparation of Glasses and Ceramics from Metal-Organic Compounds B.E. Yoldas
  15. J. Non-Cryst. Soilds v.38 Formation of Titania Silica Glasses by Low Temperature Chemical Polymerization B.E. Yoldas
  16. Ceramics Int. v.8 Power Synthesis from Metalorganic Precursors K.S. Mazdiyasni
  17. J. Am. Cer. Soc v.66 Preparation of High-Silica Glasses from Colloidal Gels. Ⅰ E.M. Robinovich;D.W. Johnson Jr.;J.B. MacChensny;E.M. Vogel
  18. J. Am. Cer. Soc v.66 Preparation of High-Silica Glasses from Colloidal Gels. Ⅱ E.M. Robinovich;D.W. Johnson Jr.;J.B. MacChensny;E.M. Vogel
  19. J. Am. Cer. Soc v.67 Preparation of SiO₂Glass from Model Powder Compacts M.D. Sacks;Tseung-Yuen Tseng
  20. J. Am. Cer. Soc v.65 Formation, Packing and Sintering of Monodisperse TiO₂Powders H.H. Bowen(et al)
  21. J. Am. Cer. Soc Synthesis and Characterization of Monosized Dopped TiO₂Powders H.K. Bowen(et al)
  22. Ceramics Int. v.13 Processing of Monodispersed ZrO₂Powders M. Kato(et al)