邻甲基苯甲酸铕与邻啡咯啉络合物的热分解动力学及寿命  

The Thermal Decomposition Kinetics and Lifetime of the Complex of Eu_2(o-MBA)_6(PHEN)_2

作　　者：张建军[1] 王瑞芬[2] 杨惠芳[3] 张秀芳[4] 白继海[5] 

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050016 [3]石家庄铁道学院材料系,石家庄050043 [4]廊坊师范学院计算中心,廊坊065000 [5]河北职业技术师范学院计算机系,昌黎066600

出　　处：《分析化学》2003年第4期472-475,共4页Chinese Journal of Analytical Chemistry

基　　金：河北省自然科学基金 (No .2 0 2 14 0 );河北省教育厅自然科学基金 (No .2 0 0 112 1);河北师范大学自然科学基金 (No .L2 0 0 1Y12 )资助项目

摘　　要：采用TG DTG技术研究了Eu2 (o MBA) 6 (PHEN) 2 (o MBA :邻甲基苯甲酸根离子 ;PHEN :1 ,1 0 邻啡咯啉 )在静态空气中的非等温热分解机理及动力学。根据TG曲线确定了热分解过程中的中间产物及最终产物。运用Acher法、Madhusudanan Krishnan Ninan (MKN)法和Ozawa法对非等温动力学数据进行分析 ,得到第一步热分解反应的机理函数和动力学参数 ,同时用等温TG法得到失重 1 0 %为寿终指标的寿命方程 :lnτ=-2 4 3 690 +1 .5 2 84× 1 0 4 T。The thermal decomposition of Eu 2(o-MBA) 6(PHEN) 2 (o-MBA=CH 3C 6H 4COO, methylbenzoate; PHEN=C 12H 8N 2, 1,10-phenanthroline) and its kinetics were studied by thermogravimetry-differential thermogravimetric (TG-DTG) method. The intermediate and residue for each step of decomposition were identified from TG curve. The mechanism function and kinetic parameters were obtained from the analysis of TG-DTG curve by the Achar method, the Madhusudanan-Krishnan-Ninan (MKN) method and the Ozawa method. The lifetime equation at weight-loss of 10% was deduced as lnτ=-24.3690+1.5284×10 4/T by isothermal thermogravimetric analysis.

关 键 词：邻甲基苯甲酸铕 邻啡咯啉结合物 复合发光材料 稀土 热分解 非等温动力学 

分 类 号：O621[理学—有机化学]