[11p-E204-1~6] 8.5 Plasma phenomena, emerging area of plasmas and their new applications

1:30 PM - 1:45 PM JST(4:30 AM - 4:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[11p-E204-1] Improvement of NO₃ Radicals Selectivity Relative to O₃

〇(M1)Yuuki Morishita¹, Shota Sasaki¹, Toshiro Kaneko¹ (1.Grad. Sch. of Eng., Tohoku Univ.)

Keywords:

Atmospheric-Pressure Plasma,Nitrogen Trioxide,Cavity-Enhanced Absorption Spectroscopy

In our previous study, high-density NO₃ radical synthesis (~10¹⁴ cm^-3)was achieved through the thermal dissociation of N₂O₅. However, the selectivity relative to coexisting O₃ remained low. In this study, the conditions for improving the NO₃/O₃ selectivity were investigated experimentally and numerically by introducing air dilution and performing reaction simulations. The simulation results revealed that both high NO₃ density and high selectivity can be achieved when the O₃/NO₂ density ratio is on the order of several tens and the dilution ratio is approximately 8.