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Research advance in non-thermal plasma induced selective catalytic reduction NO_x with low hydrocarbon compounds

SU Qingfa,LIU Yamin,CHEN Jie,PAN Hua,SHI Yao (Institute of Environment Pollution Control Technology,College of Environmental and Resource Sciences,Zhejiang University,Hangzhou 310028,Zhejiang,China)  
The emission of nitrogen oxides (NOx) from stationary sources,primarily from power stations,industrial heaters and cogeneration plants,represents a major environmental problem. This paper intends to give a general review over the advances in non-thermal plasma assisted selective catalytic reduction (SCR) of NOx with lower hydrocarbon compounds. In the last decade,the non-thermal plasma induced SCR of nitrogen oxide with low hydrocarbon compounds has received much attention. The different hydrocarbons (≤C3) used in the research are discussed. As we know, methane is more difficultly activated than non-methane hydrocarbons,such as ethylene and propylene etc. The reduction mechanism is also discussed. In addition,aiming at the difficulties existed,the direction for future research is prospected.
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