Temperatures and kinetics of anatase to rutile transformation in doped TiO2 heated in microwave field

被引：0
|
作者：
S. A. Borkar
S. R. Dharwadkar
机构：
[1] The Institute of Science,Department of Chemistry
来源：
Journal of Thermal Analysis and Calorimetry | 2004年 / 78卷
关键词：
activation energy; anatase — rutile phase transformation; microwave processing; TiO;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The influence of aliovalent ions such as Mn, Cr, Fe, Mo, and V on the temperature and kinetics of anatase to rutile phase transformation in TiO2 heated in microwave field was studied in this work. The results indicated that heat treatment method and dopants considerably affected the anatase-to-rutile phase transition temperature and kinetics of transformation. The activation energy for anatase to rutile transformation of TiO2 derived from the isothermal data was found to be 328.4 kJ mol−1, which was considerably reduced by the addition of dopants in TiO2 matrix. The activation energy for Mo, Mn and V doped samples was 252.0, 101.3 and 96.4 kJ mol−1, respectively.
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页码：761 / 767
页数：6
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