摘要
在无水乙醇中使用低水合稀土氯化物与二甲基二硫代氨基甲酸钠(NaMe_2dtc)和邻菲咯啉(o-phen·H_2O)反应,制备了含Pr-S键的三元稀土有机配合物.化学分析和元素分析结果表明其组成为Pr(Me_2dtc)_3(phen).用TG-DTG法研究了它的热分解行为,发现其热分解为一步完成,X射线粉末衍射证明直接生成Pr_2S_3.用"非模型等转化率法"研究了热分解过程的动力学,获得其表现活化能和指前因子数值范围、最可机理函数和模型函数.
Ternary solid Rare-earth complex Pr(Me2dtc)3(phen) (Me2dtc=dimethyldithiocarbamat -e,phen= phenanthroline) has been synthesized and characterized by Chemical analysis and elemental analysis. In addition,its thermal behavior was investigated by TG-DTG method, which was proved to affor d Pr2 83 by X-ray powder diffraction method after one decomposition stage. Furthermore, the decomposition process was studied by "model-free isoconversional method" in order to obtain the apparent activation energy (E),the pre-exponential constant (A),the mostprobable mechanism function and the kinetic model function.
出处
《聊城大学学报(自然科学版)》
2008年第1期54-59,共6页
Journal of Liaocheng University:Natural Science Edition
基金
国家自然科学基金资助项目(No.20771089)
陕西省自然科学基金资助项目(No.2007B02)
关键词
三元固态配合物
热稳定性
热分析动力学
ternary solid complex ,thermal stability ,thermal analysis on kinetic