稀土配合物Sm(C_3H_7NO_2)_2(C_3H_4N_2)(H_2O)(ClO_4)_3的合成及热分解动力学研究

Synthesis and thermal decomposition kinetic study of rare earth complex Sm(C_3H_7NO_2)_2(C_3H_4N_2)

摘要: 合成了高氯酸钐和咪唑、DL-α-丙氨酸混配配合物晶体.经傅立叶变换红外光谱、化学分析和元素分析确定其组成为Sm(C3H7NO2)2(C3H4N2)(H2O)C lO4)3采用TG-DTG技术研究了配合物在流动高纯氮气(99.99%)气氛中的非等温热分解动力学,运用微分法(Achar-B rind ley-Sharp和K issinger法)和积分法(Satava-Sastak和Coats-Redfern法)对非等温动力学数据进行分析,求得分解反应的表观活化能E=132.3 kJ.mol-1,动力学方程式为dα/dt=1.750×109(1-α)-ln(1-α)1/3exp(-132.3×103/RT).

Abstract: The crystal of a mixed ligand complex of samarium perchlorate with imidazole and DL-α-alanine was synthesized and characterized. The empirical formula of the crystal was determined to beSm(C_3H_7NO_2)_2(C_3H_4N_2)(H_2O)(ClO_4)_3 by FT-IR spectrum, chemical analysis and elemental analysis. The non-isothermal thermal decomposition kinetics of the complex in flow atmosphere of high purity nitrogen (99.99%) were studied by TG-DTG techniques. The non-isothermal kinetics parameters were analyzed by means of dif...