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针对国内外低气压等离子体合成氨浓度偏低的现状 ,利用常温常压下应用强电离放电在反应腔内产生的强烈放电将N2 、H2 电离、离解 ,获得大量的自由原子、离子、自由基等活性粒子 ,在定向化学反应模型的控制下合成NH3 .讨论了气体总流量、N2 /H2 体积比、气体温度、放电的折合电场强度等参数对合成氨浓度的影响 ,合成氨最高的体积分数达 12 5 0 0× 10 -6
In view of the low concentration of ammonia in domestic and foreign low pressure plasma, N2 and H2 are ionized and dissociated by using strong ionization discharge at room temperature and pressure to generate a large amount of free atoms, ions and free radicals. Active particles were synthesized under the control of directional chemical reaction model.The effects of parameters such as total gas flow rate, N2 / H2 volume ratio, gas temperature, and equivalent electric field strength of discharge on the ammonia concentration were discussed. The highest volume fraction of ammonia reached 125 0 0 × 10 -6