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Bingyan CHEN, Qi LIU, Xu LI, Chunyang ZHANG, Xiangbin GUO, Qingzhou YU, Zhicheng TANG, Xiang HE, Wei SU, Yongfeng JIANG. Synthesis of NO by rotating sliding arc discharge reactor with conical-spiral electrodes[J]. Plasma Science and Technology, 2024, 26(9): 094010. DOI: 10.1088/2058-6272/ad6815
Citation: Bingyan CHEN, Qi LIU, Xu LI, Chunyang ZHANG, Xiangbin GUO, Qingzhou YU, Zhicheng TANG, Xiang HE, Wei SU, Yongfeng JIANG. Synthesis of NO by rotating sliding arc discharge reactor with conical-spiral electrodes[J]. Plasma Science and Technology, 2024, 26(9): 094010. DOI: 10.1088/2058-6272/ad6815

Synthesis of NO by rotating sliding arc discharge reactor with conical-spiral electrodes

  • The present work investigates the potential applications of nitrogen oxides (NOx), particularly nitric oxide (NO) and nitrogen dioxide (NO2), generated through discharge plasma in diverse sectors such as medicine, nitrogen fixation, energy, and environmental protection. In this study, a rotating sliding arc discharge reactor was initially employed to produce high concentrations of gaseous NOx, followed by the utilization of a molybdenum wire redox reactor for NO2-to-NO conversion. The outcomes reveal that the discharge states and generations of NOx are affected by varying parameters, including the applied energies, frequencies and airflow states (1.3–2.6 m/s are the laminar flow, 2.6–5.2 m/s are the transition state, 5.2–6.5 m/s are the turbulent flow), and the concentrations of NOx within the arc discharge are higher than that in the spark discharge. Moreover, the concentrations of NO, NO2 and NOx gradually increased, and the concentration ratios of NO/NO2 and NOx/NO2 decreased with increasing the applied energy for one cycle from 14.8 mJ to 24.3 mJ. Meanwhile, the concentrations of NO, NO2 and NOx gradually decreased, and the concentration ratios of NO/NO2 and NOx/NO2 first decreased and then increased with increasing the applied frequencies from 5.0 kHz to 9.0 kHz. Further, the concentrations of NO, NO2 and NOx gradually decreased, and the concentration ratios of NO/NO2 and NOx/NO2 first increased and then decreased with increasing the air flow speeds from 1.3 m/s to 6.5 m/s. Lastly, the concentrations of NO increased and NO2 decreased with increasing temperature from 25 °C to 400 °C using molybdenum converted. These findings provide experimental support for the application of plasma in the fields of medicine, nitrogen fixation, energy and environmental protection.
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