摘要
用差示扫描量热法研究了溴化轻稀土甘氨酸配合物的非等温热分解过程,用Ozawa法、Kissinger法、Achar微分法及CoatsRedfern积分法计算了配合物的热分解动力学参数(E和A),并推断出了配合物失第1分子水、失第2分子水、脱甘氨酸步热分解反应函数,其热分解动力学方程分别为:dα/dt=A/β·e-E/RT(1-α),dα/dt=A/β·e-E/RT(1-α)2和dα/dt=A/β·e-E/RT(1-α)2。
Thermal decomposition kinetics of glycine complexes with light rare earth bromides was studied under non isothermal conditions by DSC technique. Their kinetic parameters(activation energy E , pre expontial factor A) were obtained from the analysis of the DSC results by the Ozawa method, the Kissinger method, the Achar method and the Coats Redfern method, respectively. The most probable kinetic functions of thermal decomposition for the first, the second and the fourth stages were suggested and their kinetic equations could be expressed as d α /d t = A/β·e -E/RT (1-α ), d α /d t = A/β·e -E/RT (1-α ) 2 and d α /d t = A/β·e -E/RT (1-α ) 2 , respectively.
出处
《应用化学》
CAS
CSCD
北大核心
2005年第1期55-58,共4页
Chinese Journal of Applied Chemistry
基金
山东省自然科学基金资助项目(Y2001B05)
关键词
溴化轻稀土甘氨酸配合物
热分解动力学
glycine complex with rare earth bromide,thermal decomposition kinetics,mechanism
