配合物[Dy(p-MBA)3phen]2的合成，表征和非等温动力学

采用水溶液合成法，合成了新型配合物Dy(p-MBA)3phen]2(p-MBA=对甲基苯甲酸；phen=1,10-邻菲啰啉)。 通过元素分析、红外光谱、摩尔电导和热分析(TG-DTG)等测试技术对配合物进行了表征。 研究了Dy(Ⅲ)配合物在静态空气气氛下的第一步热分解反应的非等温动力学。 通过用Popescu法和非线性等转化率积分法(NL-INT)的处理和计算，得到此步热分解反应的动力学方程为：dα/dT=(15.55×1012)/β·exp(-19825.60/T)3(1-α)2/3，平均活化能为164.83 kJ/mol，指前因子为15.55×1012 min-1。

Preparation, Characterization and Non-Isothermal Decomposition Kinetics of [Dy(p-MBA)3phen]2

A ternary complex with the formula of Dy(p-MBA)3phen]2(p-MBA=p-methylbenzoic acid; phen=1,10-phenathroline) was synthesized via the solution method. Elemental analysis, infrared spectra, molar conductance, thermogravimetry and derivative thermogravimetry(TG-DTG) were used to characterize the title complex. The results show the Dy(Ⅲ) ion was coordinated to the oxygen atoms of p-methylbenzoic acid, and the nitrogen atoms of the 1,10-phenanthroline, and the title complex has a good thermal stability. Non-isothermal kinetics of the first thermal decomposition stage of Dy(Ⅲ) complex was studied in the static air atmosphere. Through the Popescu method and the nonlinear integral isoconversional(NL-INT) method, the kinetic equation was expressed as dα/dT=(15.55×1012/β)exp(-19825.60/T)3(1-α)2/3, and the average activation energy and the pre-exponential factor were 164.83 kJ/mol and 15.55×1012 min-1, respectively. The thermal stability of a series of complexes was compared. The results may provide some valuable materials for the choice of functional materials of rare-earth complexes.