Effect of hydrogen generated by dielectric barrier discharge of NH3 on selective non-catalytic reduction process.
Plasma-assisted selective non-catalytic reduction (SNCR) has been investigated to clarify which species generated by the plasma play a crucial role in NO reduction. We find that the presence of O(2) is indispensable and only H(2) is observed to be a stable product by dielectric barrier discharge (DBD) of NH(3). As the extent of NH(3) decomposition by DBD increases, the commencement temperature of SNCR processes is lowered and the working temperature window is widened. This propensity may be attributed to the chemical reaction of H(2) with O(2) to generate OH and H radicals which make it possible to yield NH(2) radicals even at low temperature.
Byun
Youngchul
Y
School of Environmental Science and Engineering, Pohang University of Science and Technology, Hyoja Dong, Pohang, Kyoungbuk 790-784, Republic of Korea.
Ko
Kyung Bo
KB
Cho
Moohyun
M
Namkung
Won
W
Shin
Dong Nam
DN
Koh
Dong Jun
DJ
D000393:Air Pollutants / Q000737:chemistry* / Q000302:isolation & purification; D000641:Ammonia / Q000737:chemistry; D006859:Hydrogen / Q000737:chemistry; D009569:Nitric Oxide / Q000737:chemistry* / Q000302:isolation & purification; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry; D013696:Temperature
D000393:Air Pollutants; D009569:Nitric Oxide; D000641:Ammonia; D006859:Hydrogen; D010100:Oxygen