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Alternative TitleEffect of Alkali Metal Salts on Selective Non-Catalytic Reduction of NO by NH3
郭啸峰; 魏小林; 李森
Source Publication工程热物理学报
Other AbstractThe effect of alkali metal elements Na and K on the selective non-catalytic reduction of NO by NH3 was studied, and a detailed mechanism containing Na-K-H-O-N elements was established to explain the effect. The experimental results show that alkali metal salts can extend the "temperature window" toward a lower temperature, enhance the efficiency of NOx removal within a large range of temperatures, and the promoting effect is not sensitive to the salt type and atom concentration of alkali metal; however, the effect of sodium is more obvious than that of potassium. Under high temperatures, the promoting effect is not obvious, and higher concentration of alkali metal can enhance it slightly. The reaction path analysis shows that NH2 is important for NO reduction, and OH is crucial for producing NH2. The Na additives are beneficial for OH production under low temperatures, and the main reactions are NaOH+O2 &rarr NaO2+OH, NaOH+M &rarr Na+OH+M, and NaO+H2O &rarr NaOH+OH. The K reactions of the same form with higher activation energy and lower temperature exponent have lower reaction rates; therefore, the promoting effect of potassium on OH production is limited.
Keyword碱金属 Nh3 选择性非催化还原 详细化学反应机理
Subject Area化工流体力学
Indexed ByEI ; CSCD
Funding Organization国家自然科学基金资助项目(No.91130028;No.50776099)
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Document Type期刊论文
Corresponding Author魏小林
Recommended Citation
GB/T 7714
郭啸峰,魏小林,李森. 碱金属盐对NH3选择性非催化还原NO的影响[J]. 工程热物理学报,2013,34(8):1591-1595.
APA 郭啸峰,魏小林,&李森.(2013).碱金属盐对NH3选择性非催化还原NO的影响.工程热物理学报,34(8),1591-1595.
MLA 郭啸峰,et al."碱金属盐对NH3选择性非催化还原NO的影响".工程热物理学报 34.8(2013):1591-1595.
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