稀土-1,10-菲啰啉配合物的热分解动力学研究

Studies on the Thermal Decomposition Kinetics of Lanthanide Complexes with 1,10-phenoline as Ligand

在乙醇-水混合体系中合成了1,10-菲啰啉（phen）的三种稀土配合物Nd（phen）（CH3COO）2（NO3）（1）,Eu（phen）2（NO3）3（2）,Ho（phen）2（NO3）3（3）.采用TG-DTG和DTA技术研究了配合物在静态氮气中的热分解过程,并用Achar法和Coats-Redfern法对各配合物的非等温热力学数据进行了分析,推断出各反应的热分解反应机理及热分解反应动力学方程式,计算出了其表观活化能（E）和指前因子的对数值（lnA）.

Three lanthanide complexes Nd（phen）（CH3COO）2（NO3）（1）,Eu（phen）2（NO3）3（2）and Ho（phen）2（NO3）3（3）were synthesized with 1,10-phenoline（phen）as ligand in the system of EtOH /H2O.The thermal decompositions of the complexes were studied in static nitrogen by TG-DTG and DTA methods.The non-isothermal kinetic data of the complexes were analyzed by using the Achar and Coats-Redefern methods,then the possible reaction mechanisms of the thermal decompositions and kinetic equation were suggested,and values of activation energies（E）and pre-exponential factors（lnA）were given respectively.