Production of ammonia-derived radicals in a dielectric barrier discharge and their injection for denitrification

Y. Kusano, F. Leipold, A. Fateev, S. Stenum, H. Bindslev

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Atmospheric pressure dielectric barrier discharges (DBDs) have been widely studied for nitric oxide (NO) reduction in flue gases. In particular applying the DBD to generate activated species externally and mix them with the flue gas in a second step is favoured due to its potential energy efficiency and no generation of corrosive acids.

In the present work ammonia-derived radicals were generated using an atmospheric pressure Ar/NH3 DBD and subsequently injected into an exhaust chamber where a synthetic flue gas of an NO/N-2 mixture was fed for demonstration of NO reduction. Optical emission and laser diode absorption spectroscopy was employed for detection of NH and NE, in the discharge respectively, while ultraviolet absorption and Fourier transform infrared spectroscopy was used for detection of nitrogen oxides, ammonia, ammonia-derived radicals, and other products after mixing the plasma activated gas with the synthetic flue gas.

Although NE and NH2 radicals were observed in the discharge, due to their short lifetimes it is unlikely that they would be simply transported, mixed with the flue gas and react with NO to form N-2. On the other hand, hydrazine (N2H4), which is a stable ammonia-derived radical, was observed in the exhaust gas from the Ar/NH3 DBD. It is indicated that the hydrazine is transported into the exhaust chamber, thermally decomposed to NH2, and the efficient NO reduction can be carried out at temperatures of more than 800 K. (c) 2005 Elsevier B.V. All rights reserved.
OriginalsprogEngelsk
TidsskriftSurface and Coatings Technology
Vol/bind200
Udgave nummer1-4
Sider (fra-til)846-849
ISSN0257-8972
DOI
StatusUdgivet - 2005
Udgivet eksterntJa

Fingeraftryk

Denitrification
Nitric oxide
Flue gases
Ammonia
Hydrazine
Atmospheric pressure
Nitrogen oxides
Exhaust gases
Potential energy
Absorption spectroscopy
Fourier transform infrared spectroscopy
Energy efficiency
Semiconductor lasers
Demonstrations
Plasmas
Acids
Gases
Temperature

Citer dette

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title = "Production of ammonia-derived radicals in a dielectric barrier discharge and their injection for denitrification",
abstract = "Atmospheric pressure dielectric barrier discharges (DBDs) have been widely studied for nitric oxide (NO) reduction in flue gases. In particular applying the DBD to generate activated species externally and mix them with the flue gas in a second step is favoured due to its potential energy efficiency and no generation of corrosive acids.In the present work ammonia-derived radicals were generated using an atmospheric pressure Ar/NH3 DBD and subsequently injected into an exhaust chamber where a synthetic flue gas of an NO/N-2 mixture was fed for demonstration of NO reduction. Optical emission and laser diode absorption spectroscopy was employed for detection of NH and NE, in the discharge respectively, while ultraviolet absorption and Fourier transform infrared spectroscopy was used for detection of nitrogen oxides, ammonia, ammonia-derived radicals, and other products after mixing the plasma activated gas with the synthetic flue gas.Although NE and NH2 radicals were observed in the discharge, due to their short lifetimes it is unlikely that they would be simply transported, mixed with the flue gas and react with NO to form N-2. On the other hand, hydrazine (N2H4), which is a stable ammonia-derived radical, was observed in the exhaust gas from the Ar/NH3 DBD. It is indicated that the hydrazine is transported into the exhaust chamber, thermally decomposed to NH2, and the efficient NO reduction can be carried out at temperatures of more than 800 K. (c) 2005 Elsevier B.V. All rights reserved.",
author = "Y. Kusano and F. Leipold and A. Fateev and S. Stenum and H. Bindslev",
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Production of ammonia-derived radicals in a dielectric barrier discharge and their injection for denitrification. / Kusano, Y.; Leipold, F.; Fateev, A.; Stenum, S.; Bindslev, H.

I: Surface and Coatings Technology, Bind 200, Nr. 1-4, 2005, s. 846-849.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Production of ammonia-derived radicals in a dielectric barrier discharge and their injection for denitrification

AU - Kusano, Y.

AU - Leipold, F.

AU - Fateev, A.

AU - Stenum, S.

AU - Bindslev, H.

PY - 2005

Y1 - 2005

N2 - Atmospheric pressure dielectric barrier discharges (DBDs) have been widely studied for nitric oxide (NO) reduction in flue gases. In particular applying the DBD to generate activated species externally and mix them with the flue gas in a second step is favoured due to its potential energy efficiency and no generation of corrosive acids.In the present work ammonia-derived radicals were generated using an atmospheric pressure Ar/NH3 DBD and subsequently injected into an exhaust chamber where a synthetic flue gas of an NO/N-2 mixture was fed for demonstration of NO reduction. Optical emission and laser diode absorption spectroscopy was employed for detection of NH and NE, in the discharge respectively, while ultraviolet absorption and Fourier transform infrared spectroscopy was used for detection of nitrogen oxides, ammonia, ammonia-derived radicals, and other products after mixing the plasma activated gas with the synthetic flue gas.Although NE and NH2 radicals were observed in the discharge, due to their short lifetimes it is unlikely that they would be simply transported, mixed with the flue gas and react with NO to form N-2. On the other hand, hydrazine (N2H4), which is a stable ammonia-derived radical, was observed in the exhaust gas from the Ar/NH3 DBD. It is indicated that the hydrazine is transported into the exhaust chamber, thermally decomposed to NH2, and the efficient NO reduction can be carried out at temperatures of more than 800 K. (c) 2005 Elsevier B.V. All rights reserved.

AB - Atmospheric pressure dielectric barrier discharges (DBDs) have been widely studied for nitric oxide (NO) reduction in flue gases. In particular applying the DBD to generate activated species externally and mix them with the flue gas in a second step is favoured due to its potential energy efficiency and no generation of corrosive acids.In the present work ammonia-derived radicals were generated using an atmospheric pressure Ar/NH3 DBD and subsequently injected into an exhaust chamber where a synthetic flue gas of an NO/N-2 mixture was fed for demonstration of NO reduction. Optical emission and laser diode absorption spectroscopy was employed for detection of NH and NE, in the discharge respectively, while ultraviolet absorption and Fourier transform infrared spectroscopy was used for detection of nitrogen oxides, ammonia, ammonia-derived radicals, and other products after mixing the plasma activated gas with the synthetic flue gas.Although NE and NH2 radicals were observed in the discharge, due to their short lifetimes it is unlikely that they would be simply transported, mixed with the flue gas and react with NO to form N-2. On the other hand, hydrazine (N2H4), which is a stable ammonia-derived radical, was observed in the exhaust gas from the Ar/NH3 DBD. It is indicated that the hydrazine is transported into the exhaust chamber, thermally decomposed to NH2, and the efficient NO reduction can be carried out at temperatures of more than 800 K. (c) 2005 Elsevier B.V. All rights reserved.

U2 - 10.1016/j.surfcoat.2005.01.022

DO - 10.1016/j.surfcoat.2005.01.022

M3 - Journal article

VL - 200

SP - 846

EP - 849

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

SN - 0257-8972

IS - 1-4

ER -