钐-邻硝基苯甲酸与1，10-邻菲咯啉配合物的热分解动力学

The complex of Sm₂(o-NBA)₆(PHEN)₂ (o-NBA, o-Nitrobenzoate; PHEN, 1,10-phenanthroline) was prepar-ed and characterized by elemental analysis, IR and UV spectraoscopy. The thermal decomposition mechanism of Sm₂(o-NBA)₆(PHEN)₂ was studied under a static air atmosphere by TG-DTG. The thermal decomposition kinetics of the complex for the first stage was studied under non-isothermal condition. The most probable mechanism functions of the thermal decomposition reaction for the first stage are: G(α)=[-ln(1-α)]^1/2, f(α)=2(1-α)[-ln(1-α)]^1/2. The activation energy E for the first stage is 259.50 kJ·mol^-1, the pre-exponential factor A is 36.19×10¹⁸ min^-1. The lifetime equation at weight-loss of 10% was deduced as lnτ=-36.70+27 572.12/T by isothermal thermogravimetric analysis.