Thermal Dechlorination Kinetics of Rare Earth Oxychlorides
来源期刊：Journal of Rare Earths2007年第S1期
论文作者：Hee-Chul Yang Yong-Zun Cho Hee-Chul Eun Eung-Ho Kim In-Tae Kim
文章页码：8 - 12
摘 要：The kinetics of a thermal dechlorination and oxidation of NdOCl and GdOCl were investigated by using a non-isothermal thermogravimetric analysis under various oxygen partial pressures. The conversions of NdOCl and GdOCl into each of their stable oxides （Nd2O3 and Gd2O3） appeared to be an oxygen-dependent endothermic and one-step reaction. The observed activation energy for the conversions of NdOCl and GdOCl were determined as 228.3±6.1 kJ·mole-1 and 137.7±4.1 kJ·mole-1, respectively. The conversions of NdOCl and GdOCl into each of their stable oxides （Nd2O3 and Gd2O3） could be described by a power law （g（α）=α3/2） and a linear-contracting boundary reaction （g（α）=α）, respectively.
Hee-Chul Yang，Yong-Zun Cho，Hee-Chul Eun，Eung-Ho Kim，In-Tae Kim
摘 要：The kinetics of a thermal dechlorination and oxidation of NdOCl and GdOCl were investigated by using a non-isothermal thermogravimetric analysis under various oxygen partial pressures. The conversions of NdOCl and GdOCl into each of their stable oxides （Nd2O3 and Gd2O3） appeared to be an oxygen-dependent endothermic and one-step reaction. The observed activation energy for the conversions of NdOCl and GdOCl were determined as 228.3±6.1 kJ·mole-1 and 137.7±4.1 kJ·mole-1, respectively. The conversions of NdOCl and GdOCl into each of their stable oxides （Nd2O3 and Gd2O3） could be described by a power law （g（α）=α3/2） and a linear-contracting boundary reaction （g（α）=α）, respectively.
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