2-羟基-1-萘醛缩-4-氨基安替比林与钆(Ⅲ)配合物的合成、表征及热分解动力学

Synthesis,Characterization and Thermodecomposition Kinetics of Gd(Ⅲ) Complex With 2-Hydroxy-1-Naphthaldehyde-4-Aminoantipyrine

合成了一种新的希夫碱配合物[Gd(HL)(C2H5OH)(H2O)2](NO3)3(HL表示2 羟基 1 萘醛缩 4 氨基安替比林)。通过元素分析、IR、UV和摩尔电导分析等手段对合成的配合物进行了表征,用非等温热重法研究了钆配合物的热分解反应动力学,推断出第一步和第三步的热分解动力学方程。

A new solid complex of Gd(Ⅲ) with Schiff base(HL) derived from 2-hydroxy-1-naphthaldehyde and 4-aminoantipyrine is synthesized and characterized by elemental analysis, IR, UV and molar conducivity analysis. The composition of the complex is confirmed to be [Gd(HL)(C_2H_5OH)(H_2O)_2](NO_3)_3.The thermodecomposition kinetics of the complex for the first stage and third stage is studied under non-isothermal condition by TG and DTG methods. The kinetic equations may be expressed as : d a/ d t=A ·e ^(-E/RT)·3/2(1-a)^(2/3)[1-(1-a)^(1/3)]^(-1), d a/ d t=A ·e ^(-E/RT)·1/2(1-a)[- ln (1-a)]^(-1)。