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NO Conversion by Dielectric Barrier Discharge and TiO2 Catalyst: Effect of Oxygen

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Abstract

Present study was carried out to investigate the conversion of NO by simultaneous action of the dielectric barrier discharge (DBD) and TiO2 catalyst. NO conversion was recorded as a function of the input energy density by varying the percentage of NO and O2. NO conversion efficiency increased at higher content of O2. The presence of a TiO2 coating inside the reactor resulted in initially enhanced NO conversion but in few minutes the positive effect of TiO2 diminished. The increased conversion of NO in initial stage of the process was more pronounced at higher densities of input energy (higher than 100 J/l) and at lower O2 concentrations, but without O2 the TiO2 coating had no effect on the conversion of NO. The results indicate that the conversion of NO during first few minutes is related to the surface reactions with adsorbed atomic oxygen.

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Acknowledgments

This study was financially supported by the Estonian Science Foundation (Grant No. 6654).

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Authors and Affiliations

  1. Institute of Physics, University of Tartu, Tähe 4, 51010, Tartu, Estonia

    I. Jõgi, V. Bichevin, M. Laan, A. Haljaste & H. Käämbre

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  1. I. Jõgi
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  2. V. Bichevin
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  3. M. Laan
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  4. A. Haljaste
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  5. H. Käämbre
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Correspondence to I. Jõgi.

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Jõgi, I., Bichevin, V., Laan, M. et al. NO Conversion by Dielectric Barrier Discharge and TiO2 Catalyst: Effect of Oxygen. Plasma Chem Plasma Process 29, 205–215 (2009). https://doi.org/10.1007/s11090-009-9171-5

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  • DOI: https://doi.org/10.1007/s11090-009-9171-5

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