采用以偏钛酸与碳酸钾按原料摩尔比为1∶3.5混合均匀,通过一步烧结法合成六钛酸钾晶须。采用改变不同焙烧温度和焙烧时间为条件,研究了六钛酸钾的生长机理,同时还研究了水浸处理对产物的影响,并利用XRD和SEM对样品的物相及形貌进行了分析。结果表明,反应温度达到600℃时生成K2Ti8O17中间体,随着温度升高八钛酸钾向六钛酸钾及四钛酸钾转化,当温度继续升高四钛酸钾向六钛酸钾发生了转化。
Potassium hexatitanate whiskers were synthesized starting from metatitanic acid and potassium carbonate when their molar ratio was kept at 1∶3.5 by calcination method.The evolution mechanism of potassium titanate prepared with different calcination temperatures was investigated.The samples were characterized by X-ray（XRD） diffractometry and scanning electron microscopy（SEM）.The result show that potassium octatitanate was formed at 600℃,accompanied with the increasing temperature,potassium octatitanate was converted to potassium tetratitanate and potassium hexatitanate,potassium tetratitanate was converted to potassium hexatitanate.
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