Reactive species production and toluene degradation in an expanded streamer discharge plasma induced by a floating plate electrode

Liu, Zhengyan; Jiang, Nan; Peng, Bangfa; Li, Jie; Wu, Yan

doi:10.1016/j.jece.2022.107607

Cited by 2 publications

(3 citation statements)

References 35 publications

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“…In principle, the FE acquires and accumulates charge from the HV electrode to enhance the electric field strength between the FE and ground electrode during discharge. This has a significant effect on the discharge characteristics and generation of reactive species . In the present study, a stainless-steel sheet with a width of approximately 10 mm was used as the FE, which was wrapped and placed between the two electrodes inside the reactor.…”

Section: Resultsmentioning

confidence: 99%

“…This has a significant effect on the discharge characteristics and generation of reactive species. 63 In the present study, a stainless-steel sheet with a width of approximately 10 mm was used as the FE, which was wrapped and placed between the two electrodes inside the reactor. The distance between the discharge electrode and FE (g 1 ) was fixed at 7 mm, whereas the distance between the FE and ground electrode (g 2 ) was varied (5, 9, and 15 mm).…”

Section: ■ Introductionmentioning

confidence: 99%

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Toward Reducing the Energy Cost of NO_x Formation in a Spark Discharge Reactor through Pinpointing Its Mechanism

Abdelaziz

Teramoto

Nozaki

et al. 2023

ACS Sustainable Chem. Eng.

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Interest in sustainable nitrogen fertilizer production using plasma technology is rapidly growing, and this method is a promising way to decentralize fertilizer synthesis and achieve carbon-free production. However, improving efficiency remains a major challenge for the industrial application of this technology. Herein, we present comprehensive experiments using spark discharge to pinpoint the key factors affecting the efficiency of this process and provide technical approaches to improve the energy usage. We found that applying a bipolar voltage at high frequencies greatly benefited the NO x yield and its efficiency via the utilization of residual species. Measurements using active cooling for the reactor and electrodes revealed that the chemical loss process was not significant, but the energy loss during the heating of the electrode was the dominant loss process, particularly at high frequencies (>20 kHz) where an anchor state of the spark was reached. However, the beneficial effects of higher frequencies compensated for and mitigated the higher power loss resulting in slowing the increase of the energy cost with the energy density. Moreover, enlarging the plasma zone (reaction channel) by increasing the electrode gap was an effective approach for enhancing the energy usage for the desired reaction. Further, the limitations of enlarging the gap were resolved by inserting a floating electrode in the large gap, yielding higher NO x production (1.8%–3.0%) at a lower energy cost (1.9–4.4 MJ/mol), and further enhancements could be achieved by optimizing the reactor configuration. Therefore, the results provide an important basis for the further development and optimization of plasma reactors for efficient chemical reactions.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Toward Reducing the Energy Cost of NO_x Formation in a Spark Discharge Reactor through Pinpointing Its Mechanism

Abdelaziz

Teramoto

Nozaki

et al. 2023

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…A non-thermal plasma generated in the gas phase has been studied for its promising applications such as gas purification of exhaust gas by waste gas treatment [1][2][3] and odor control [3][4][5] for environmental applications, and keeping freshness of fruit and vegetables by removing ethylene gas [6][7][8] and seed germination control 9,10) for agricultural applications. In the non-thermal plasma, various kinds of reactive oxygen, such as oxygen radical (O) and ozone (O 3 ) species, and reactive nitrogen species are produced, which contribute to these applications.…”

Section: Introductionmentioning

confidence: 99%

Development of palm-sized gas treatment device utilizing streamer discharges generated by compact resonant high-voltage pulse generator

Takahashi

Suzuki

Saito

et al. 2023

Jpn. J. Appl. Phys.

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A compact and lightweight gas treatment system integrated with a high-voltage pulse generator driven by SiC-MOSFET and wires-to-wires electrode. The maximum amplitude and pulse width of the output voltage of the pulse generator without load are 10 kV and 31 ns, respectively, and the maximum energy transfer efficiency reaches 88% with a load resistance of 0.44 k. This pulse generator was applied to a multilayered wires-to-wires electrodes and the streamer discharges propagate between the electrodes was observed. Streamers initially propagates horizontally according to the Laplacian electric field near the high-voltage electrode. When they approach the ground electrodes, they curve and propagate toward the ground electrode due to the high electric field between the streamer head and the ground electrode. The velocity of the streamer propagation is with a velocity of 0.4 to 0.71 × 106 m/s. Ozone production and ethylene removal characteristics are investigated in a sealed vessel.

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Reactive species production and toluene degradation in an expanded streamer discharge plasma induced by a floating plate electrode

Cited by 2 publications

References 35 publications

Toward Reducing the Energy Cost of NO_x Formation in a Spark Discharge Reactor through Pinpointing Its Mechanism

Toward Reducing the Energy Cost of NO_x Formation in a Spark Discharge Reactor through Pinpointing Its Mechanism

Development of palm-sized gas treatment device utilizing streamer discharges generated by compact resonant high-voltage pulse generator

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Reactive species production and toluene degradation in an expanded streamer discharge plasma induced by a floating plate electrode

Cited by 2 publications

References 35 publications

Toward Reducing the Energy Cost of NOx Formation in a Spark Discharge Reactor through Pinpointing Its Mechanism

Toward Reducing the Energy Cost of NOx Formation in a Spark Discharge Reactor through Pinpointing Its Mechanism

Development of palm-sized gas treatment device utilizing streamer discharges generated by compact resonant high-voltage pulse generator

Contact Info

Product

Resources

About

Toward Reducing the Energy Cost of NO_x Formation in a Spark Discharge Reactor through Pinpointing Its Mechanism

Toward Reducing the Energy Cost of NO_x Formation in a Spark Discharge Reactor through Pinpointing Its Mechanism