活性氧含量对NO脉冲放电脱除的影响

doi:10.3969/j.issn.1000-1565.2016.06.004

河北大学学报(自然科学版) ›› 2016, Vol. 36 ›› Issue (6): 583-589.DOI: 10.3969/j.issn.1000-1565.2016.06.004

活性氧含量对NO脉冲放电脱除的影响

张淼¹,王晓君²,程学良²,张连水²

收稿日期:2016-05-25 出版日期:2016-11-25 发布日期:2016-11-25
作者简介:张淼(1986—),女,河北保定人,河北大学实验师,主要从事光谱仪器及光谱分析方向研究. E-mail:mzhanghbu@163.com
基金资助:
国家自然科学基金资助项目(10875036)

Living oxygen concentration effect on NO removal efficiency on pulsed discharge

ZHANG Miao¹,WANG Xiaojun²,CHENG Xueliang²,ZHANG Lianshui²

1.College of Chemistry & Environmental Science, Hebei University, Baoding 071002, China; 2.College of Physics Science and Technology, Hebei University, Baoding 071002, China

Received:2016-05-25 Online:2016-11-25 Published:2016-11-25

摘要/Abstract

摘要： NO是大气污染的主要成分,从微观上研究其脱除机理是提高NO脱除效率的关键问题.本研究采用发射光谱方法,分别对不同氧含量条件下NO负脉冲流光放电等离子体脱除过程进行了实验研究.研究结果表明:在无氧气参加反应的情况下,纯NO的脱除主要是快电子与NO的激发解离碰撞,即NO+e^*→NO^*+e→N^*+O^*+e,生成N原子和O原子,继而还原成N₂和O₂,从而达到NO脱除的目的;在富氧情况下,NO的脱除主要是在快电子参与下,NO与氧原子或氧分子发生氧化反应,转化为NO₂,而不再是前者的还原脱除反应.

关键词: NO, 脱除, 脉冲放电, 氧含量

Abstract: As an essential pollution gas,NO gas has drawn attentions for investigating its removal microscopic mechanism,in order to improve the removal efficiency.The fluorescence technique has been applied to analyze the NO removal dynamics with O₂ or without O₂ using negative pulsed streamer discharge plasma.Results indicate that,without the participation of O₂,the direct collision dissociation between energetic electrons and NO molecular have played a major role for NO removal.Such a removal reacting pathway can be presented as NO+e^*→NO^*+e→N^*+O^*+e,which produces O and N atoms and then O₂ and N₂ molecules.With more oxygen,the major removal reaction of NO has been changed to the oxidation reaction to yield NO₂ rather than the former reduction reaction.

Key words: NO, gas removal, pulsed discharge, oxygen concentration

中图分类号:

O433.2

张淼,王晓君,程学良,张连水. 活性氧含量对NO脉冲放电脱除的影响[J]. 河北大学学报(自然科学版), 2016, 36(6): 583-589.

ZHANG Miao,WANG Xiaojun,CHENG Xueliang,ZHANG Lianshui. Living oxygen concentration effect on NO removal efficiency on pulsed discharge[J]. Journal of Hebei University (Natural Science Edition), 2016, 36(6): 583-589.

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活性氧含量对NO脉冲放电脱除的影响

Living oxygen concentration effect on NO removal efficiency on pulsed discharge

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