固体火箭技术Issue(2)：219-222,4.DOI:10.7673/j.issn.1006-2793.2014.02.014
α-AlH3的合成及热分解动力学
Synthesis and thermal decomposition kinetics of α-AlH3
秦明娜 1张彦 1汪伟 1唐望 1石强 1邱少君1
作者信息
摘要
Abstract
α-AlH3 was synthesized by using LiAlH4 and A1C13 as raw materials. The products were characterized by XRD and SEM.The thermal decomposition reaction of α-AlH3 was investigated by TG/DTG-DSC. The kinetic parameters of the major decom-position reaction were calculated.The decomposition reaction ofα-AlH3 conformed to nuclei production and nuclei growth model.The apparent activation energy, pre-exponential factor and mechanism function of the decomposition reaction ofα-AlH3 are Ea=110.89 kJ/mol, lnA=26.94 s-1, f(α)=-ln(1-α)1/4, respectively.The kinetic equation of the decomposition process can be expressed as dα/dT=(2.004×1011/β)exp(-1.333 78×104/T)(1-α)[-ln(1-α)]3/4.关键词
α-AlH3/TG/DTG-DSC/热分解/机理/动力学Key words
α-AlH3/TG/DTG-DSC/thermal decomposition/mechanism/kinetic分类
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秦明娜,张彦,汪伟,唐望,石强,邱少君..α-AlH3的合成及热分解动力学[J].固体火箭技术,2014,(2):219-222,4.
