Jian-Yong Xuan

Publications (3)2.53 Total impact

• Article: [Diagnosis of electron energy and comparative effects of OH, O or O3 on NO oxidation in pulsed corona discharge].

  Jian-yong Xuan, Zhong-yang Luo, Lei Zhao, Jian-ping Jiang, Xiang Gao
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  ABSTRACT: The spectrum of excited N2 molecules and ions was measured by optical emission spectroscopy in pulsed corona discharge with a wire-to-plate reactor. The ratio of emission intensities emitted by the excited molecules and ions of N2 was compared with numerical simulation to determine average electron energies and electric field distributions. Within 2 cm distance from wire electrode in horizontal and vertical directions, electric field and average electron energies appear to be in the ranges of 11.05 19.6 MV x m(-1) and 10.10-13.92 eV respectively; as the distance increases, average electron energies and electric field show a similar trend: first decrease and then increase. Chemically active species, such as OH, O and O3, can be generated through the energetic electron collisions with H2O and O2 directly or indirectly. For the NO oxidation, there is no coexistence of NO and O3, whereas there is a coexistence of NO and OH. NO is oxidized by O3 or O more efficiently than by OH radical.
  Guang pu xue yu guang pu fen xi = Guang pu 05/2012; 32(5):1157-61. · 0.84 Impact Factor
• Article: [Study of a wire-to-plate positive pulsed corona discharge reactor by emission spectroscopy].

  Shen-Bing Wang, Zhong-Yang Luo, Lei Zhao, Jian-Yong Xuan, Jian-Ping Jiang, Ke-Fa Cen
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  ABSTRACT: In order to get extensive knowledge of wire-to-plate pulsed corona discharge reactor, the influences of different diameters of wire electrode, different wire-to-plate and wire-to-wire spacing on OH radical generation were experimentally investigated under atmospheric pressure based on emission spectrum, and the spatial distribution of OH radicals in the electric field was also discussed in detail The results showed that OH radicals decrease along the X-axis, and the activation radius is approximately 20 mm; showing a trend of first increase and then decrease along the Y-axis, with the activation radius being more than 30 mm. OH radical has small change as the diameter of wire electrode changes below 2 mm, with a sharp decline as the diameter continues to increase. OH radical emission intensity increases as wire-to-wire spacing increases and decrease as wire-to-plate spacing increases.
  Guang pu xue yu guang pu fen xi = Guang pu 11/2011; 31(11):2896-900. · 0.84 Impact Factor
• Article: [Analysis of streamer properties and emission spectroscopy of 2-D OH distribution of pulsed corona discharge].

  Lei Zhao, Xiang Gao, Zhong-Yang Luo, Jian-Yong Xuan, Jian-Ping Jiang, Ke-Fa Cen
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  ABSTRACT: Streamer plays a key role in the process of OH radical generation. The propagation of primary and secondary streamers of positive wire-plate pulsed corona discharge was observed using a short gate ICCD in air environment. The influence of the applied voltage on the properties was investigated. It was shown that the primary streamer propagation velocity, electric coverage and length of secondary streamer increased significantly with increasing the applied voltage. Then 2-D OH distribution was investigated by the emission spectrum. With the analysis of the OH emission spectra, the distribution of OH radicals showed a trend of decreasing from the wire electrode to its circumambience. Compared with the streamer propagation trace, the authors found that OH radical distribution and streamer are in the same area. Both OH radical concentration and the intensity of streamer decreased when far away from the wire electrode.
  Guang pu xue yu guang pu fen xi = Guang pu 11/2011; 31(11):2901-5. · 0.84 Impact Factor