| α-三氢化铝的热分解动力学 |
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| 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(5):392-399. |
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| 作者姓名： | 叶素 周德珍 冉全印 |
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| 作者单位： | Liming Research Institute of Chemical Industry |
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| 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。
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| 收稿时间： | 1985-06-28 |
| 修稿时间： | 1985-11-02 |
THE THERMAL DECOMPOSITION KINETICS OF α-ALUMINIUM HYDRIDE |
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| Ye Su,Zhou Dezhen,Ran Quanyin.THE THERMAL DECOMPOSITION KINETICS OF α-ALUMINIUM HYDRIDE[J].Acta Physico-Chimica Sinica,1986,2(5):392-399. |
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| Authors: | Ye Su Zhou Dezhen Ran Quanyin |
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| Institution: | Liming Research Institute of Chemical Industry |
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| 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... |
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