对氯苯甲酸铕与邻菲咯啉络合物热分解动力学参数及寿命的测定  

Determination of Thermal Decomposition Kinetic Parameters and Lifetime of Europium p-Chlorobenzoate Complex with 1, 10-Penanthroline by Thermal Gravimetric Analysis

作　　者：张建军[1] 王瑞芬[2] 

机构地区：[1]河北师范大学实验中心,石家庄050016 [2]河北师范大学化学系,石家庄050091

出　　处：《分析化学》2001年第10期1209-1212,共4页Chinese Journal of Analytical Chemistry

基　　金：河北省教育厅资助项目(No.2001121);河北师范大学科学基金资助项目(No.L2000y08)

摘　　要：用ＴＧ－ＤＴＧ技术研究了对氯苯甲酸铕与邻菲咯啉络合物在静态空气中的热分解，用Ｃｏａｔｓ－Ｒｅｄｆｅｒｎ（ＣＲ）法、Ｈｏｒｏｗｉｔｚ－Ｍｅｔｚｇｅｒ（ＨＭ）法、Ｍａｄｈｕｓｕｄａｎａｎ－Ｋｒｉｓｈｎａｎ－Ｎｉｎａｎ（ＭＫＮ）法、Ｏｚａｗａ法和Ｋｉｓｓｉｎｇｅｒ法计算了对氯苯甲酸铕与邻菲咯啉络合物第一步热分解反应的动力学参数活化能（Ｅ）、指前因子（Ａ）、反应级数（ｎ）等。用等温ＴＧ法得到失重１０％的Ｅ、Ａ值和寿命方程：The thermal decomposition reaction of europium p-chlorobenzoate complex with 1,10-penanthroline was studied in static air by non-isothermal thermogravimetry. Its thermal decomposition occurs mainly in three steps. fine intermediate and residue for each step of decomposition were identified from thermogravimetric curve. The activation energy, pre-exponential factor and reaction order were calculated by the methods of Coats-Redfern, Horowitz-Metzger, Madhusudanan-Krishnan-Ninan, Ozawa and Kissinger. The lifetime equations at weight-loss of 10% was deduced as ln tau = - 23.0189 + 13794.1/T by isothermal thermogravimetric analysis.

关 键 词：铕络合物 热重分析 动力学参数 寿命 对氯苯甲酸铕 邻菲咯啉 热分解 活化能 指前因子 反应级数 

分 类 号：O643.1[理学—物理化学]