摘要
合成了稀土配合物[Sm(m-BrBA)3phen]2.2H2O(m-BrBA,间溴苯甲酸;phen,邻菲罗啉)。用差示扫描量热(DSC)技术研究了该配合物脱水反应的动力学方程和动力学参数。实验数据用双等双步法处理,得到脱水反应的动力学方程为dα/dt=Aexp(-E/RT)2(1-α)[-ln(1-α)]1/2。表观活化能E为237.26kJ.mol-1,指前因子A为4.40×1018/min-1,分别获得了脱水过程的热力学参数ΔH≠,ΔG≠和ΔS≠的值。
The compound of [Sm （m-BrBA） 3phen ]2·2H2O （m-BrBA = m-bromobenzoate, phen = 1, 10- phenanthroline） was prepared. The dehydration kinetic equation and the kinetic parameters of [Sm （m-BrBA） 3phen ]2·2H2O were studied by DSC techniques. The data were treated by double equal-double step method. The results showed that the kinetic equation of the dehydration is da/dt = Aexp（ - E/ RT）2（ 1-α ） [ - In（ 1-α ）]1/2. The activation energy E was 237.26 kJ·mol^-1 and pre-exponential factor A was 4.40 ×10^18/min^-1. Meanwhile, the thermodynamic parameters ,ΔH≠,,ΔG≠ and ,ΔS≠were obtained.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2007年第4期553-557,共5页
Chinese Journal of Rare Metals
