高压脉冲放电等离子体活化甲烷催化还原净化NO_x  

ACTIVATION OF CH4 AND CATALYTIC REDUCTION OF NOX BY HIGH VOLTAGE PULSE DISCHARGING PLASMA

作　　者：程国宏[1] 李胜利[1] 章英慧[1] 

机构地区：[1]华中科技大学环境科学与工程学院

出　　处：《天然气工业》2004年第12期142-144,共3页Natural Gas Industry

基　　金：国家自然科学基金项目 (No .5 0 1770 12 )资助

摘　　要：排放废气中的氮氧化合物已经成为了一个严重的环境问题 ,日益引起人们的关注。因此 ,氮氧化合物的脱除就成了目前催化研究的一个热点。采用离子交换法制备Co SZM 5催化剂 ,研究了有氧条件下 ,在甲烷选择还原NOx 的反应中 ,高压脉冲放电等离子体的加入对Co SZM 5活性的影响。结果发现 :在较低温度下 ,高压脉冲放电等离子体与Co SZM 5之间存在着协同效应。在此基础上 ,初步探讨了高压脉冲放电等离子体活化甲烷催化还原净化NOxNitric oxide covered in the exhaust gas has become a serious problem of environment, which attracts increasing attention. So, it is the focus of catalyst research to eliminate nitric oxide. Using Co-SZM-5 catalyst prepared by ion exchanging method, under oxygen existing conditions, the influence of high voltage pulse discharging plasma that join in the reaction of selective reduction of NO x by CH 4 on the activation of Co-SZM-5 is investigated. It is found the cooperative effect between the high voltage pulse discharging plasma and Co-SZM-5 is existed under the lower temperature. Based on the finding, the reaction mechanism of activation of CH 4 and catalytic reduction of NO x by high voltage pulse discharging plasma is discussed preliminarily.

关 键 词：高压脉冲放电 催化还原 净化 废气 环境问题 等离子体 氮氧化合物 甲烷 活化 选择还原 

分 类 号：X701.3[环境科学与工程—环境工程]