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    • 3. 发明公开
    • 이산화티타늄 나노분말, 타이타네이트, 리튬 타이타네이트 나노 분말 및 이들의 제조 방법
    • 二氧化钛纳米颗粒,钛酸钠,钛酸锂纳米颗粒及其制备方法
    • KR1020130076935A
    • 2013-07-09
    • KR1020110145368
    • 2011-12-29
    • 주식회사 포스코
    • 김동현김지용석준호정석모손종훈
    • C01G23/047C01D15/00B82B3/00B82Y40/00
    • C01G23/005B82Y30/00B82Y40/00C01D15/00C01G23/0536C01P2002/04C01P2002/10C01P2002/72C01P2002/90C01P2004/03C01P2004/04C01P2004/13C01P2004/62C01P2004/64H01M4/485H01M10/052Y02E60/122Y10T428/2982
    • PURPOSE: A manufacturing method of titanium dioxide nanopowder is provided to change physical electrochemical properties of titanium dioxide nanopowder with the grain size control by producing titanium dioxide nanopowder having quasicrystal phase through the hydrothermal reaction mixing jelly form TiOCl2 and water. CONSTITUTION: A titanium dioxide nanopowder has a mesophase phase (a medium phase of amorphous and crystalline). The XRD major peak of the mesophase phase is relatively shifted and broadening. The average granularity of the titanium dioxide nanopowder is 150nm or less. The manufacturing method of the titanium dioxide nanopowder comprises the following steps: (a) preparing jelly form TiOCl2 by blending TiCl4 solution and water together and obtaining titanium dioxide nanopowder having the mesophase portion through the hydrothermal reaction, and (b) mixing jelly form TiOCl2 and water. The step (a) controls the amount of water so that the Ti3+ ion concentration can be 0.1-1.3M. The step (b) controls the amount of water so that the Ti3+ ion concentration can be 1.5-4.3M. The reaction of titanium dioxide nanopowder having the mesophase and an alkaline solution produces one-way titanate. The reaction of one-way titanate and the lithium hydroxide produces lithium titanate.
    • 目的:提供二氧化钛纳米粉末的制备方法,通过水热反应混合胶体形式TiOCl2和水,通过生产具有准晶相的二氧化钛纳米粉末,通过晶粒尺寸控制来改变二氧化钛纳米粉末的物理电化学性能。 构成:二氧化钛纳米粉末具有中间相(无定形和结晶的中等相)。 中期相的XRD主峰相对偏移和变宽。 二氧化钛纳米粉末的平均粒度为150nm以下。 二氧化钛纳米粉末的制造方法包括以下步骤:(a)通过将TiCl4溶液与水混合在一起制备二氧化钛凝胶,并通过水热反应得到具有中间相部分的二氧化钛纳米粉末,(b)将形成TiO 2和 水。 步骤(a)控制水的量,使得Ti3 +离子浓度可以为0.1-1.3M。 步骤(b)控制水的量,使得Ti 3+离子浓度可以为1.5-4.3M。 具有中间相的二氧化钛纳米粉末和碱性溶液的反应产生单向钛酸盐。 单向钛酸盐和氢氧化锂的反应产生钛酸锂。