Thermal Dechlorination Kinetics of Rare Earth Oxychlorides
The kinetics of a thermal dechlorination and oxidation of NdOCl and GdOCl were investigated by using a nonisothermal thermogravimetric analysis under various oxygen partial pressures. The conversions of NdOC1 and GdOC1 into each of their stable oxides (Nd<,2>O<,3> and Gd<,2>O<,3>) appeared to be an oxygen-dependent endothermic and one-step reaction. The observed activation energy for the conversions of NdOC1 and GdOC1 were determined as 228.3±6.1kJ·mole<-1> and 137.7±4.1kJ·mole<-1>, respectively. The conversions of NdOCl and GdOCl into each of their stable oxides (Nd<,2>O<,3> and Gd<,2>O<,3>) could be described by a power law (g(α)=α<3/2>) and a linear-contracting boundary reaction (g(α)=α), respectively.
oxychloride dechlorination oxidation high temperature rare earths
Hee-Chul Yang Yong-Zun Cho Hee-Chul Eun Eung-Ho Kim In-Tae Kim
Advanced Fuel Cycle Process Development Group, Korea Atomic Energy Research Institute, Daejeon 305-353, Korea
国际会议
第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)
包头
英文
8-12
2007-08-07（万方平台首次上网日期，不代表论文的发表时间）