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首页> 外文期刊>International Journal of Aerodynamics >Towards a kinetic understanding of the ignition of air-propane mixture by a non-equilibrium discharge: the decomposition mechanisms of propane
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Towards a kinetic understanding of the ignition of air-propane mixture by a non-equilibrium discharge: the decomposition mechanisms of propane

机译：通过非平衡放电对空气-丙烷混合物着火的动力学理解：丙烷的分解机理

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The decomposition of propane in non-thermal plasmas of N_2/C_3H_8 and N_2/O_2/C_3H_8 mixtures (oxygen percentage up to 20%) at low temperature is studied in a photo-triggered discharge. Quenching of nitrogen metastable states dissociate C_3H_8 to produce propene and hydrogen. Oxidation reactions are growing in importance when the O_2 concentration increases, but the dissociation quenching reactions still occurs for the air-based mixture. Even for a low concentration of oxygen, OH is an important specie involved in the conversion of the hydrocarbon. A kinetic analysis emphasises that OH comes in great part from the production of H, in which the methyl radical plays a role, strengthening the role of the dissociation processes of propane and propene in the medium reactivity. Results of PLIF measurements performed on OH during the diffuse afterglow of a nanosecond corona discharge correlate with results obtained on the photo-triggered discharge.
机译：在光触发放电中研究了N_2 / C_3H_8和N_2 / O_2 / C_3H_8混合物（氧气含量高达20％）的非热等离子体中丙烷的分解。氮亚稳态的淬灭解离C_3H_8以产生丙烯和氢。当O_2浓度增加时，氧化反应的重要性越来越高，但对于空气基混合物，仍会发生解离猝灭反应。即使对于低浓度的氧气，OH也是参与烃转化的重要物质。动力学分析强调，OH在很大程度上来自于H的产生，其中H的甲基起作用，从而增强了丙烷和丙烯在介质反应性中的离解过程。在纳秒级电晕放电的弥散余辉期间，在OH上执行的PLIF测量结果与在光触发放电中获得的结果相关。

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