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水介质中N,N-二甲基-2-叠氮乙胺盐酸盐的合成反应动力学 被引量:2

Reaction Kinetics of Synthesizing 2-Azido-N,N-dimethylethylamine Hydrochloride in Aqueous Solution
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摘要 N,N-二甲基-2-叠氮乙胺(DMAZ)是一种可替代肼类推进剂的新型低毒液体燃料。为了提高DMAZ的合成效率,利用紫外吸收光谱测定法研究了水介质中N,N-二甲基-2-氯乙胺盐酸盐与叠氮化钠反应合成N,N-二甲基-2-叠氮乙胺盐酸盐的动力学过程。结果表明,该反应为二级反应,337.15,347.15,357.15 K温度下的表观反应速率常数分别为1.337×10-3,3.403×10-3,7.082×10-3L·mol-1·min-1,表观活化能Ea为83.5 kJ·mol-1,指前因子k0为1.19×1010L·mol-1·min-1。 2-Azido-N,N-dimethylethylamine (DMAZ) is a new low-toxic liquid fuel which can be used to replace propellant of hydrazine and its derivatives. To improve the synthesis efficiency of DMAZ,the reaction kinetics of 2-chloro-N,N-dimethylethyl- amine hydrochloride with sodium azide in aqueous solution was studied using ultra-violet absorption spectrometry. The results show that the reaction can be considered as a second-order reaction. The reaction rate constants are 1.337 ×10^-3,3.403 ×10-3 7.082×10^- 3 L · mol^-1 · min^-1, respectively, at 337. 15, 347. 15, 357. 15 K. The apparent activation energy (Ea) is 83.5 kJ · mol ^-1 and the pre-exponential factor (k0) is 1.19 ×10^10 L· mol^-1 · min^-1.
作者 孙甜甜 厉刚
机构地区 浙江大学化学系
出处 《含能材料》 EI CAS CSCD 北大核心 2013年第1期49-52,共4页 Chinese Journal of Energetic Materials
基金 航天科技创新基金资助项目(批准号:CASC200903)
关键词 应用化学 液体推进剂 N N-二甲基-2-叠氮乙胺(DMAZ) 水介质 紫外吸收光谱 反应动力学 applied chemistry liquid propellant 2-azido-N,N-dimethylethylamine(DMAZ) water solvent ultraviolet absorptionspectrum reaction kinetics
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