[Eu_2(p-MOBA_)6(phen)_2](H_2O)_2配合物热分解动力学研究  

Kinetics of Thermal Decomposition of )2](H2O)2 in Static Air Atmosphere

作　　者：张建军[1,2,3] 王瑞芬[1,2,3] 赵建路 默丽萍[1,2,3] 翟学良[1,2,3] 葛立国 

机构地区：[1]河北师范大学实验中心 [2]河北师范大学化学系 [3]石家庄市第二教育学院

出　　处：《稀有金属》1999年第4期264-268,共5页Chinese Journal of Rare Metals

摘　　要：采用ＴＧＤＴＧ技术研究了［Ｅｕ２（ｐＭＯＢＡ）６（ｐｈｅｎ）２］（Ｈ２Ｏ）２（ｐＭＯＢＡ代表对甲氧基苯甲酸根离子；ｐｈｅｎ表示１，１０邻啡罗啉）在静态空气中的非等温热分解过程及动力学，根据ＴＧ曲线确定了热分解过程的中间产物及最终产物，运用Ａｃｈａｒ法与ＣｏａｔｓＲｅｄｆｅｒｎ法对非等温动力学数据进行分析，推断出第一步的动力学方程为ｄα／ｄｔ＝Ａｅｘｐ（－Ｅ／ＲＴ）［－ｌｎ（１－α）］－１；第二步和第三步的动力学方程均为ｄα／ｄｔ＝Ａｅｘｐ（－Ｅ／ＲＴ）３／２（１－α）４／３［１／（１－α）１／３－１］－１。The thermal decomposition of the (H2O)2 (pMOBA=C8H7O3, methoxybenzoate; phen=C12H8N2, 1,10phenanthroline) and its kinetics were studied under the nonisothermal condition in air by TG and DTG methods. The intermediate and residue for each decomposition were identified from TG curve. By means of the Achar method and CoatsRedfern method analyzed the nonisothermal kinetic data. The possible reaction mechanisms were suggested by comparing the kinetic parameters. The kinetic equation for the first stage can be expressed as d/dt=Aexp(-E/RT) -1, the second stage and the third stage, d/dt=Aexp(-E/RT)3/2(1-)4/3 -1. The mathematical expressions of the kinetic compensation effects of each stage of the thermal decomposition reaction also were obtained.

关 键 词：热分解 非等温动力学 铕配合物 对甲氧基苯甲酸 

分 类 号：O641.4[理学—物理化学] O614.62[理学—化学]