Flame bands: CO + O chemiluminescence as a measure of gas temperature
| Autor: | M.C.M. van de Sanden, C. F. A. M. van Deursen, W.A. Bongers, G. Raposo, A. W. van de Steeg, E. R. Mercer, G.J. van Rooij, F. J. J. Peeters, H. J. L. Hendrickx |
|---|---|
| Přispěvatelé: | Circular Chemical Engineering, RS: FSE CCE |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Acoustics and Ultrasonics Analytical chemistry plasma afterglow Measure (mathematics) gas temperature measurement OXYGEN law.invention symbols.namesake chemistry.chemical_compound law Emission spectrum PHOTOLYSIS CARBON-MONOXIDE COMBINATION SHOCK-TUBE Chemiluminescence SPECTRAL DISTRIBUTION Physics Plasma afterglow Plasma DISSOCIATION Condensed Matter Physics Ion source chemiluminescence Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry O-2 Schumann-Runge emission RATE-CONSTANT CO2 plasma symbols CHEMI-LUMINESCENCE RADIATION Raman scattering Carbon monoxide CO flame band emission |
| Zdroj: | Journal of Physics D: Applied Physics, 53, 374005 Journal of physics: D: applied physics Journal of Physics D-Applied Physics, 54(37):374005. IOP Publishing Ltd. |
| ISSN: | 0022-3727 |
| Popis: | Carbon monoxide flame band emission (CO + O -> CO2 + h nu) in CO2 microwave plasma is quantified by obtaining absolute calibrated emission spectra at various locations in the plasma afterglow while simultaneously measuring gas temperatures using rotational Raman scattering. Comparison of our results to literature reveals a contribution of O-2 Schumann-Runge UV emission at T > 1500 K. This UV component likely results from the collisional exchange of energy between CO2(B-1) and O-2. Limiting further analysis to T < 1500 K, we demonstrate the utility of CO flame band emission by analyzing afterglows at different plasma conditions. We show that the highest energy efficiency for CO production coincides with an operating condition where very little heat has been lost to the environment prior to similar to 3 cm downstream, while simultaneously, T ends up below the level required to effectively freeze in CO. This observation demonstrates that, in CO2 plasma conversion, optimizing for energy efficiency does not require a sophisticated downstream cooling method. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|