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The effects of pulse shape on the selectivity and production rate in non-oxidative coupling of methane by a micro-DBD reactor
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Pourali, Nima, Hessel, Volker and Rebrov, Evgeny V. (2022) The effects of pulse shape on the selectivity and production rate in non-oxidative coupling of methane by a micro-DBD reactor. Plasma Chemistry and Plasma Processing, 42 . pp. 619-640. doi:10.1007/s11090-022-10242-6
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WRAP-Effects-pulse-shape-selectivity-production-rate-non-oxidative-coupling-methane-micro-DBD-reator-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (1390Kb) | Preview |
Official URL: https://doi.org/10.1007/s11090-022-10242-6
Abstract
The conversion of methane to ethylene has been investigated in a micro-DBD reactor with electrodes containing charge injector parts and excited with a negatively nano-second pulse voltage superimposed on a positive dc voltage. The effect of changing the characteristics of pulsed voltage such as pulse rise time (5–7 ns), total pulse width (12–14 ns), and pulse fall time (5–7 ns) on generation rate and products selectivity of the methane plasma has been studied. The kinetic model includes twenty species (electron, ions, radicals, and neutrals). The results showed that change in input pulse shape changes the generation rate and selectivity of neutral products. The rate of voltage change during pulse on-time significantly changed the instant C2H4 selectivity. With increasing the pulse rise and fall times the ethylene selectivity decreases, while the hydrogen selectivity increases. Results also showed that the electron reactions are dominant conversion channels during pulse on-time, while they had lower contributions in conversion progress during pulse off-time and the conversion process during this period is mainly governed by the radical reactions.
| Item Type: | Journal Article | ||||||||
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| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TP Chemical technology |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
| Library of Congress Subject Headings (LCSH): | Ethylene -- Synthesis, Methane, Pulsed power systems | ||||||||
| Journal or Publication Title: | Plasma Chemistry and Plasma Processing | ||||||||
| Publisher: | Springer | ||||||||
| ISSN: | 0272-4324 | ||||||||
| Official Date: | May 2022 | ||||||||
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| Volume: | 42 | ||||||||
| Page Range: | pp. 619-640 | ||||||||
| DOI: | 10.1007/s11090-022-10242-6 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Open Access | ||||||||
| RIOXX Funder/Project Grant: |
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