摘要
采用ＴＧＤＴＧ技术研究了［Ｅｕ２（ｐＭＯＢＡ）６（ｐｈｅｎ）２］（Ｈ２Ｏ）２（ｐＭＯＢＡ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ＣｏａｔｓＲｅｄｆｅｒｎ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.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
1999年第4期264-268,共5页
Chinese Journal of Rare Metals
关键词
热分解
非等温动力学
铕配合物
对甲氧基苯甲酸
Thermal decomposition, Nonisothermal kinetic, Europium complex, pMethoxbenzoic acid
