摘要
合成了苦味酸铋配合物(Bi-PA),对其结构进行了表征,并用TG-DTG及DSC技术研究了化合物的热行为和分解反应动力学。结果表明,在TG曲线上出现一个最大的失重阶段,对应于DSC曲线上的最大放热峰。放热分解反应过程可以认为是化学反应,其机理方程的微分式为f(α)=3(1-α)[-ln(1-α)]2/3,动力学方程为dα/dt=1013.51(1-α)[-ln(1-α)]2/3e-1.96×104/T。反应阶段的活化熵(ΔS≠),活化焓(ΔH≠)及活化自由能(ΔG≠)分别为2.25J.mol-1.K-1,159.82kJ.mol-1及158.60kJ.mol-1。
The bismuth complex of picric acid（Bi-PA） was prepared and characterized,and its thermal behaviors,non-isothermal decomposition reaction kinetics were investigated by thermogravimetry and derivative thermogravimetry（TG-DTG）,and differential scanning calorimetry（DSC）.The results show that there is one mass loss stage in the TG curve,which is corresponding to one exothermic peak on a DSC curve.The reaction mechanisms of the exothermal decomposition processes is classified as chemical reaction,the mechanism function is f（α）=3（1-α）[-ln（1-α）]2/3,and the kinetic equation is dα/dt=1013.51（1-α）[-ln（1-α）]2/3e-1.9×104/T.The entropy of activation（ΔS≠）,enthalpy of activation（ΔH≠）,and free energy of activation（ΔG≠） of the reaction are 2.25J·mol-1·K-1,159.82 kJ·mol-1,and 158.60 kJ·mol-1,respectively.
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2010年第5期19-24,47,共7页
Chinese Journal of Explosives & Propellants
基金
The National Natural Science Foundation of China(No.20803058),2008 Equipment
关键词
物理化学
苦味酸铋
热行为
分解反应动力学
热安全性
physical chemistry
bismuth complex of picric acid
thermal behaviors
decomposition reaction kinetics
thermal safety
