Cold Plasma-Assisted Selective Catalytic Reduction of NO over B₂O₃/纬-Al₂O₃

详细信息	查看全文 | 推荐本文 |

• 作者：Qinqin YU ; Tong LIU ; Hui WANG ; Liping XIAO ; Min CHEN ; Xiaoyuan JIANG ; Xiaoming ZHENG ; ^{xmzheng@zju.edu.cn}
• 关键词：nitrogen oxide ; selective catalytic reduction ; boric oxide ; alumina ; cold plasma ; temperature-programmed surface reduction
• 刊名：Chinese Journal of Catalysis
• 出版年：2012
• 期刊代码：3_18722067
• 类别：ce
• 出版时间：April-June, 2012
• 卷：33
• 期：4-6
• 页码：783-789
• 文件大小：209 K

摘要

A plasma-assisted catalytic system for the selective catalytic reduction of NO with methane was investigated. NO₂, HCHO, CH₃NO, and CH₃NO₂ were the reactive intermediates generated by the plasma. The further reactions of these intermediates on the catalyst during the thermal catalytic stage resulted in the conversion of NO_x to N₂, which was verified by temperature-programmed surface reaction characterization. B₂O₃纬-Al₂O₃ was the best catalyst with the maximum conversion of NO_x to N₂ increasing from 33.4%on 纬-Al₂O₃ to 51.0%on 10 wt%B₂O₃纬-Al₂O₃ at 300 掳C. NH₃-TPD characterization showed that the acidity of the catalyst is important for the reduction of NO_x by the intermediates generated by the plasma. NO_x-TPD showed that the adsorbed NO_x species on the catalysts also played a role in the conversion of NO_x.