摘要
报道一种不用催化剂,一步脱除ＮＯ的新方法——常压微波放电法．探讨在(ＮＯ,Ｈｅ),(ＮＯ．Ｏ２,Ｈｅ)和(ＮＯ,Ｏ２,Ｈ２Ｏ,Ｈｅ)体系中微波放电脱除ＮＯ的差异．研究结果表明,在(ＮＯ,Ｈｅ)条件下可实现一步高效脱除ＮＯ,在(ＮＯ,Ｏ２,Ｈｅ)条件下也可实现８０%左右的ＮＯ转化,其中Ｎ２的选择性高达８０%,而Ｈ２Ｏ的加入并未影响Ｎ２的产率．同时发现,随着微波功率的加大,ＮＯ转化率也增大,而Ｎ２的选择性增大得更多．最终可达到一个平衡值．最后研究了ＮＯ和Ｏ２浓度及气体流量对ＮＯ脱除的影响．
The decomposition of NO in a continuous microwave discharge was investigated. When(NO,He) mixture was used as the reactant, almost all NO can be converted to N2. In(NO, O2 ) He) system,the conversion of NO was nearly 80%, and the selectivity of N2 was 80%. When adding 5%H2O to(NO,O2, He) system, the productivity of N2 was not changed basically. However, as the microwave power wasincreased, the conversion of NO increased, and the selectivity of N2 increased even more. The effects ofNO and O2 concentrations, and flow-rate on NO removal were also observed in the microwave discharge.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第4期632-635,共4页
Chemical Journal of Chinese Universities
基金
"九五"国家重点科技攻关项目(96-544-02-01)资助.
关键词
微波放电
NO
微波功率
一氧化氮
脱氮
Microwave discharge
NO removal
Selectivity of N2
Microwave power
