CAJ | 학술논문

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。
채용이편태산여탄산갑안원료마이비위1∶3.5혼합균균,통과일보소결법합성륙태산갑정수。채용개변불동배소온도화배소시간위조건,연구료륙태산갑적생장궤리,동시환연구료수침처리대산물적영향,병이용XRD화SEM대양품적물상급형모진행료분석。결과표명,반응온도체도600℃시생성K2Ti8O17중간체,수착온도승고팔태산갑향륙태산갑급사태산갑전화,당온도계속승고사태산갑향륙태산갑발생료전화。
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.