低温等离子体转化NO/C_3H_6/O_2/N_2气氛中NO的实验研究及机理分析  

Experimental Research and Mechanism Analysis of NO Conversion in NO/C_3H_6/O_2/N_2 Mixture Gases by Non-thermal Plasma

作　　者：蔡忆昔[1] 孙传红[1] 王军[1] 韩文赫[1] 

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《汽车工程学报》2011年第1期64-68,共5页Chinese Journal of Automotive Engineering

基　　金：国家自然科学基金资助项目(50776041);江苏省自然科学基金项目(BK2010330);江苏省高校自然科学研究项目(10KJB470001);江苏大学高级专业人才科研启动基金项目(10JDG051)

摘　　要：利用介质阻挡放电获得低温等离子体,开展了含氧气氛中利用低温等离子体转化NO的实验研究,研究了放电环境和添加C3H6对NO/O2/N2气氛中O3生成浓度与NO转化的影响。结果表明,冷却环境有利于O3的生成和NO转化率的提高;激励电压峰峰值升高时,O3生成浓度和NO转化率随之升高;添加C3H6有利于NO转化率的升高,且NOx浓度随激励电压峰峰值升高而下降;并探讨了NO/C3H6/O2/N2混合气放电时NO的转化机理。Abstract： The non-thermal plasma was obtained by dielectric barrier discharge under atmospheric pressure, and the experimental research about NO conversion in the oxidation atmosphere by non-thermal plasma has been conducted. The effect of discharge voltage on the 03 formation and NO~ conversion at different discharge space temperatures was investigated. The results show that elevated discharge space temperature is not conducive to O：~ fbrmation and NO conversion. When C：~H6 is injected into discharged gas, the gas oxidation was obviously enhanced. NO conversion increased and NOx concentration decreased with increasing discharge voltage. Finally the mechanism of NO conversion during the discharge in mixtures of NO/C3H6/O2/N2 was studied by gas component detection.

关 键 词：介质阻挡放电 NO转化率 O3 反应机理 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]