Preparation of Layered Potassium Titanate Whiskers with Large Length-diameter Ratio by KDC Method  

作　　者：吉晓莉 WU Shijiang 章嵩 ZHAO Xiujian 

机构地区：[1]State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology [2]State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2014年第4期669-673,共5页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Natural Science Foundation Key Project of Hubei Province(No.2011CDA060)

摘　　要：Pure K2Ti4O9 whiskers were prepared by KDC（Kneading-Drying-Calcination） method with TiO2 and K2CO3 as raw materials. The influences of TiO2/K2CO3 molar ratio（RT/K）, calcination temperature（TC） and cooling process on phase composition and morphology of the whiskers were investigated by TG-DSC（thermo gravimetric-differential scanning calorimeter）, XRD（X-ray diffraction）, and SEM（scanning electron microscope）. Pure K2Ti4O9 potassium titanate whiskers with large length-diameter ratio（r）（over 250） can be obtained at RT/K = 2.9 and TC = 950 ℃.Pure K2Ti4O9 whiskers were prepared by KDC（Kneading-Drying-Calcination） method with TiO2 and K2CO3 as raw materials. The influences of TiO2/K2CO3 molar ratio（RT/K）, calcination temperature（TC） and cooling process on phase composition and morphology of the whiskers were investigated by TG-DSC（thermo gravimetric-differential scanning calorimeter）, XRD（X-ray diffraction）, and SEM（scanning electron microscope）. Pure K2Ti4O9 potassium titanate whiskers with large length-diameter ratio（r）（over 250） can be obtained at RT/K = 2.9 and TC = 950 ℃.

关 键 词：KDC（kneading-drying-calcination） method potassium titanate whiskers TiO2/K2CO3 molar ratio（RT/K） length-diameter ratio（r） 

分 类 号：TQ131.13[化学工程—无机化工]