화학공학소재연구정보센터
Industrial & Engineering Chemistry Research, Vol.49, No.19, 9128-9134, 2010
Selective Synthesis of Potassium Titanate Whiskers Starting from Metatitanic Acid and Potassium Carbonate
Selective synthesis of potassium titanate whiskers starting from metatitanic acid and potassium carbonate was successfully carried out by a facile calcination method. The mole ratio of potassium carbonate to metatitanic acid and the calcination temperature and time were crucial to the formation of different-structured potassium titanate whiskers. Well-crystallized potassium tetratitanate whiskers were prepared at a calcination temperature of 1000 degrees C when the mole ratio of potassium carbonate to metatitanic acid was 1:2.5. Potassium hexatitanate whiskers were dominantly formed at 1150 degrees C when the mole ratios of potassium carbonate to metatitanic acid were in a range of 1:3.5-1:4.5. Well-crystallized potassium octatitanate whiskers were prepared when potassium tetratitanate whiskers were boiled in water and then dried at a high temperature of 400 degrees C. The growth directions of all the potassium titanate whiskers are along their [010] crystal directions.