Kinetic simulation of the reaction between N,N-dimethylazidoethylamine (DMAZ) and dinitrogen tetroxide (NTO) based on density functional theory

IF 2.1 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY
Jin Guofeng, Huang Zhiyong, Huang Yuanzheng, Gao Minna, Wang Yingying
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引用次数: 0

Abstract

This study focuses on the application of N,N-dimethylazidoethylamine (DMAZ) as an alternative fuel to the traditional hydrazine fuel. Shortening ignition delay time is the key factor for the DMAZ application. In order to explore the ignition mechanism of DMAZ and NTO, the reaction mechanism between DMAZ and NO2/NTO was studied based on density functional theory (DFT). The results showed that under the conditions of the gas phase and NTO liquid phase, the main path of the reaction is that NO2 attacks the secondary hydrogen atom of DMAZ. The gas-phase reaction enthalpy is higher than that in the NTO liquid phase, indicating that the gas-phase reaction absorbs more energy and is not easy to proceed, while the NTO liquid-phase reaction is easier. The combustion mechanism of DMAZ and NTO was preliminarily obtained. It is speculated that under actual working conditions, DMAZ and NTO mainly undergo the liquid-phase reaction.

基于密度泛函理论的N,N-二甲基齐乙胺(DMAZ)与四氧化二氮(NTO)反应动力学模拟
研究了N,N-二甲基齐乙胺(DMAZ)作为传统联氨燃料的替代燃料。缩短点火延迟时间是影响DMAZ应用的关键因素。为了探究DMAZ与NTO的着火机理,基于密度泛函理论(DFT)研究了DMAZ与NO2/NTO的反应机理。结果表明,在气相和NTO液相条件下,反应的主要路径是NO2攻击DMAZ的仲氢原子。气相反应焓高于NTO液相反应焓,说明气相反应吸收能量更多,不易进行,而NTO液相反应更容易进行。初步得出了DMAZ和NTO的燃烧机理。推测在实际工况下,DMAZ和NTO主要发生液相反应。
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来源期刊
Structural Chemistry
Structural Chemistry 化学-化学综合
CiteScore
3.80
自引率
11.80%
发文量
227
审稿时长
3.7 months
期刊介绍: Structural Chemistry is an international forum for the publication of peer-reviewed original research papers that cover the condensed and gaseous states of matter and involve numerous techniques for the determination of structure and energetics, their results, and the conclusions derived from these studies. The journal overcomes the unnatural separation in the current literature among the areas of structure determination, energetics, and applications, as well as builds a bridge to other chemical disciplines. Ist comprehensive coverage encompasses broad discussion of results, observation of relationships among various properties, and the description and application of structure and energy information in all domains of chemistry. We welcome the broadest range of accounts of research in structural chemistry involving the discussion of methodologies and structures,experimental, theoretical, and computational, and their combinations. We encourage discussions of structural information collected for their chemicaland biological significance.
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