介质阻挡放电等离子体脱除氮氧化物的发射光谱研究  

Optical Emission Spectroscopy Diagnosis on Decomposition of NO in NO/N_2 Mixtures in Dielectric Barrier Discharge Plasma

作　　者：刘晶[1] 牛金海[1] 徐勇[1] 朱爱民[1] 孙琪[1] 聂龙辉[1] 

机构地区：[1]大连理工大学等离子体物理化学实验室,大连116024

出　　处：《物理化学学报》2005年第12期1352-1356,共5页Acta Physico-Chimica Sinica

基　　金：国家"十五""863"计划青年基金(2002AA649140);国家自然科学基金(20077005);辽宁省科学技术基金(20022112)资助项目~~

摘　　要：在大气压下,NO/N2体系中,利用发射光谱技术对50Hz和5kHz交流介质阻挡放电等离子体在200～900nm范围内进行了诊断.在632、674.5、715.5和742nm等处测得了N原子的谱线.利用化学发光法NOx分析仪,模块式红外吸收气体分析检测仪,大气压下直连质谱多种检测手段对放电前后的稳定物种进行了分析,观察到O2的生成.初步讨论了无氧条件下介质阻挡放电等离子体中NO脱除的反应机制.The optical emission spectroscopy of NO/N2 in dielectric barrier discharge （DBD） plasmas using a. c. with frequeucies of 50 Hz and 5 kHz has been studied at atmospheric pressure. Excited-state nitrogen atom was detected at 632, 674.5, 715.5 and 742 nm. The concentrations of the mixtures were measured by using chemilluminescence NOx analyzer and N20 infrared gas analyzer; the production of 02 was also monitored by an on-line mass spectrograph after the discharge. The reaction mechanism of the removal of NO in N2 in DBD plasma was discussed.

关 键 词：大气压 介质阻挡放电 等离子体 NO N原子 发射光谱 质谱 

分 类 号：X701.3[环境科学与工程—环境工程]