Study on Isothermal Kinetics of Gas-Solid Azidation Reaction
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摘要:为研究气固叠氮化反应过程，采用等温热重（TG）法，测试叠氮化钠、硬脂酸以及铜粉混合物在120℃、130℃、140℃下的热重曲线，对气体释放及叠氮化过程进行表征，根据不同温度下的TG数据进行动力学计算，推算气固叠氮化反应的反应机理方程。研究表明：叠氮酸生成反应的机理函数为26号，Mampel Power法则，纳米铜粉叠氮化反应的机理函数为29号，反应机理为收缩球体（体积），相边界反应。本研究为气固原位叠氮化反应的过程研究提供理论和技术支撑。
Abstract:In this paper, isothermal TG was used to study the gas-solid azidation reaction, in which TG curves of the mixture of stearic acid, sodium azide and Cu nano particls were measured at 120℃, 130℃, 140℃. The TG curves at different temperature were used to dynamic calculation, in order to predict the mechanism equation of gas-solid azidation reaction. The results showed that the mechanism function of hydrazoic acid generation reaction is No.26 Mampel Power’s law, and that of copper azide reaction is No.29 shrinking sphere phase-side reaction mechanism. This research provides theoretical and technical support for the process study of gas-solid azidation reaction.
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