Synthesis of ultra-fine crystalline Zr_xTi_(1-x)O_4 powder by polymeric precursor method

摘要

Reactive Zr_xTi_(1-x)O_4 (x=0.65, 0.50 and 0.35) powder was prepared by the polymeric precursor method. Studies by X-ray diffraction (XRD), nitrogen adsorption/desorption, and thermogravimetric analysis (TG) showed that powders with high crystallinity (> 90 percent) and high surface areas (> 40 m~2/g) are obtained after calcination at 700 deg C for 3 h. Infrared spectroscopy and XRD results showed that these titanates nucleate from the amorphous phase with no intermediate phases, at low temperature (450 deg C).