期刊
PLASMA SOURCES SCIENCE & TECHNOLOGY
卷 26, 期 3, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1361-6595/aa5b1d
关键词
CO2 splitting; corona discharge; nanosecond pulses
资金
- EPSRC from the 4CU Programme Grant at the University of Sheffield [EP/K001329/1]
- Spanish Government Agency 'Ministerio de Economia y Competitividad' [FIS2014-54539-P]
- EPSRC [EP/K001329/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K001329/1] Funding Source: researchfish
The plasma chemical splitting of carbon dioxide (CO2) to produce carbon monoxide (CO) in a pulsed corona discharge was investigated from both an experimental and a numerical standpoint. High voltage nanosecond pulses were applied to a stream of pure CO2 and its mixture with argon, and the gaseous products were identified using Fourier transform infrared spectroscopy. Due to the shape of pulses, the process of CO2 splitting was found to proceed in two phases. The first phase is dominated by ionization, which generates a high electron density. Then, during the second phase, direct electron impact dissociation of CO2 contributes to a large portion of CO production. Conversion and energy efficiency were calculated for the tested conditions. The conversions achieved are comparable to those obtained using other high pressure non- thermal discharges, such as dielectric barrier discharge. However, the energy efficiencies were considerably higher, which are favorable to industrial applications that require atmospheric conditions and elevated gas flow rates.
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