引用本文:
叶素, 周德珍, 冉全印. α-三氢化铝的热分解动力学[J]. 物理化学学报,
1986, 2(05): 392-399.
doi:
10.3866/PKU.WHXB19860502
Citation: Ye Su, Zhou Dezhen, Ran Quanyin. THE THERMAL DECOMPOSITION KINETICS OF α-ALUMINIUM HYDRIDE[J]. Acta Physico-Chimica Sinica, 1986, 2(05): 392-399. doi: 10.3866/PKU.WHXB19860502
Citation: Ye Su, Zhou Dezhen, Ran Quanyin. THE THERMAL DECOMPOSITION KINETICS OF α-ALUMINIUM HYDRIDE[J]. Acta Physico-Chimica Sinica, 1986, 2(05): 392-399. doi: 10.3866/PKU.WHXB19860502
α-三氢化铝的热分解动力学
摘要:
用差热分析(DTA)研究了a-三氢化铝在氦气流下的热分解动力学。建立了A-E方程中动力学参数与DTA曲线的特征温度之间的关系式, 用序贯法对竞争模型进行最佳判别和参数估算, 确定a-三氢化铝的热分解曲线可用方程[-In(1-x)]~(1/4)=r_0e~(-E/RT_t)来描述, 表观活化能E为121.4±6.3 kJmoL~(-1), 指前因子r_0为8.1×10~(11±1)(sec-1), 模型计算结果与实验结果吻合较好。
English
THE THERMAL DECOMPOSITION KINETICS OF α-ALUMINIUM HYDRIDE
Abstract:
The thermal decomposition kinetics of α-AIH_3 in helium flow was investigated by differential thermal analysis(DTA).
The thermal decomposition curve for of α-AIH_3 is an endothermal process, it yields sigmoidal fraction of decomposition(x)vs.time, the main part of which can be expressed by Avrami-Erofeev (A-E) equation[-In (1-x)]1/n=r_0e~(R/RT). The correlation formula between DTA curve and kinetic parameters in A-E equation was derived under conditions of linear temperature increase.
As sample quantfties a...
The thermal decomposition curve for of α-AIH_3 is an endothermal process, it yields sigmoidal fraction of decomposition(x)vs.time, the main part of which can be expressed by Avrami-Erofeev (A-E) equation[-In (1-x)]1/n=r_0e~(R/RT). The correlation formula between DTA curve and kinetic parameters in A-E equation was derived under conditions of linear temperature increase.
As sample quantfties a...
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