Pulse shape influence on the atmospheric barrier discharge

Martens, Tom; Bogaerts, Annemie; Dijk, van J Jan

doi:10.1063/1.3315881

Cited by 48 publications

(24 citation statements)

References 11 publications

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“…The combination of DBD and photocatalysts leads to a significant enhancement in CO 2 conversion and energy efficiency of the plasma process. Previous simulation work has suggested that the energy efficiency of a plasma reactor can be enhanced by a factor of 4 when using rectangular pulses instead of a sinusoidal voltage 51 . Further improvement in the energy efficiency for this process can be expected from the optimisation of the plasma power and the design of new catalysts (e.g.…”

Section: Methodsmentioning

confidence: 99%

Plasma-photocatalytic conversion of CO 2 at low temperatures: Understanding the synergistic effect of plasma-catalysis

Mei

Zhu

et al. 2016

Applied Catalysis B: Environmental

229

146

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A coaxial dielectric barrier discharge (DBD) reactor has been developed for plasma-catalytic conversion of CO2 into value-added chemicals at low temperatures (<150 o C) and atmospheric pressure. The effect of specific energy density (SED) on the performance of the plasma process has been investigated. In the absence of a catalyst in the plasma, the maximum conversion of CO2 reaches 21.7 %. The synergistic effect from the combination of plasma with photocatalysts (BaTiO3 and TiO2) at low temperatures contributes to a significant enhancement of both CO2 conversion and energy efficiency by up to 250%. The synergy of plasma-catalysis for CO2 conversion can be attributed to both the physical effect induced by the presence of catalyst pellets in the discharge and the photocatalytic surface reaction driven by the plasma.

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Section: Methodsmentioning

confidence: 99%

Plasma-photocatalytic conversion of CO 2 at low temperatures: Understanding the synergistic effect of plasma-catalysis

Mei

Zhu

et al. 2016

Applied Catalysis B: Environmental

229

146

View full text Add to dashboard Cite

show abstract

“…Thus, to gain an insight into the pulsed DBDs, the numerical simulations have been widely adopted on the basis of different models [14], [15]. More recently, the effects of the discharge conditions on the characteristics of the pulsed DBDs have been systematically studied [16]- [18]. These investigations have focused mainly on the pulsed DBDs in inert gases, and thus it is desirable to reveal the differences between the pulsed DBDs in inert gases and in molecular gases for further exploring the mechanisms of the pulsed DBDs.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Pulsed Dielectric Barrier Discharges in Argon and Nitrogen at Atmospheric Pressure

Pan

Tan

Wang

et al. 2015

IEEE Trans. Plasma Sci.

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In this paper, the mechanisms and characteristics of the pulsed dielectric barrier discharges in Ar and N 2 at atmospheric pressure are analyzed and compared by means of numerical simulation based on the 1-D fluid model. Under different operating conditions, including gap width d g , dielectric thickness d s , and relative dielectric constant ε r , the important characteristic quantities of describing the discharge, i.e., maximum discharge current density J m , averaged electron density N e−ave , and averaged dissipated power density P ave , are observed and studied in detail. This paper gives the following significant results. In Ar, the discharge occurs after the gap voltage has reached its maximum and is in the form of two short discharge current density pulses. In N 2 , the discharge starts from the increase of the gap voltage and presents the smooth development in a longer time being nearly equal to the pulsewidth. For the two gases, J m , N e−ave , and P ave decrease with the increase of d g , and these characteristic quantities decrease with the increase of d s , or with the decrease of ε r . In addition, the discharges in Ar maintain in the atmospheric pressure glow discharge (APGD), but the discharges in N 2 operate in the varying discharge modes, including the APGD, the weak APGD, and the atmospheric pressure Townsend discharge. The development of the APGD in N 2 requires the smaller gap width, the thinner dielectric thickness, and the larger relative dielectric constant.Index Terms-Argon, atmospheric pressure, nitrogen, pulsed dielectric barrier discharge (DBD).

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“…The fast voltage growth rate of the pulsed-excitation DBD may be useful for the uniformity of the DBD. It may be related to the improvement of the ionization efficiency, the change of discharge process, and the reduction of the overheating effect [25]- [27]. As shown in Fig.…”

Section: Resultsmentioning

confidence: 93%

“…The difference in the peak discharge current between the pulsed-and sinusoidal-excitation DBDs was observed in previous studies among parallel-plate DBDs in other gas. In general, the discharge current magnitude achieved with the pulsed-excitation DBD was one to several orders larger than that of the sinusoidal-excitation DBD [25]- [27]. Fig.…”

Section: Methodsmentioning

confidence: 93%

Generation of Homogeneous Atmospheric-Pressure Dielectric Barrier Discharge in a Large-Gap Argon Gas

Fang

Shao

et al. 2012

IEEE Trans. Plasma Sci.

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The generation of homogeneous dielectric barrier discharge (DBD) in a 8-mm large-gap Ar at atmospheric pressure by employing a microsecond pulsed power supply excitation is presented. The electrical and optical characteristics of the homogeneous DBD are experimentally studied, and the comparison of the discharge characteristics with its sinusoidal counterpart and the improvement of the discharge stability using the water electrodes are also experimentally investigated. Results show that, as compared with filamentary-mode discharges with sinusoidal excitation, stable and homogeneous DBD with higher energy efficiency is shown to be generated using the pulsed excitation over a large voltage range, and the pulsed-excitation DBD can generate more total transferred charges per one voltage cycle with less consumed discharge power. The suppression of the instabilities by using water electrode is desirable for improving stability, and the critical voltage for generated homogeneous DBD can be improved with water electrode.Index Terms-Dielectric barrier discharge (DBD), discharge uniformity, filamentary mode, gas discharge, homogeneous discharge, plasma sources, stability, water electrode.

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Pulse shape influence on the atmospheric barrier discharge

Cited by 48 publications

References 11 publications

Plasma-photocatalytic conversion of CO 2 at low temperatures: Understanding the synergistic effect of plasma-catalysis

Plasma-photocatalytic conversion of CO 2 at low temperatures: Understanding the synergistic effect of plasma-catalysis

Comparative Study of Pulsed Dielectric Barrier Discharges in Argon and Nitrogen at Atmospheric Pressure

Generation of Homogeneous Atmospheric-Pressure Dielectric Barrier Discharge in a Large-Gap Argon Gas

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