Chemical composition of gaseous products generated by coplanar barrier discharge in air and N-2/O-2 mixtures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG43__%2F23%3A00558573" target="_blank" >RIV/60162694:G43__/23:00558573 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/22:00127318

Výsledek na webu

<a href="https://iopscience.iop.org/article/10.1088/1361-6595/ac9c8f" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-6595/ac9c8f</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6595/ac9c8f" target="_blank" >10.1088/1361-6595/ac9c8f</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Chemical composition of gaseous products generated by coplanar barrier discharge in air and N-2/O-2 mixtures

Popis výsledku v původním jazyce

Absolute densities of gaseous products generated by coplanar dielectric barrier discharge in N-2/O-2 mixtures and in ambient air were determined using Fourier transform infrared (FTIR) spectroscopy. A theoretical model containing up to four molecular absorption cross sections was used to split the peaks overlapping in the FTIR spectra. The product densities were determined for a wide range of applied input powers (100-400 W). Ozone (O-3) and nitrogen oxides (N2O, NO, NO2 and N2O5) were identified as the stable products of the discharge in N-2/O-2 mixtures, HNO2, HNO3 and CO2 were steadily present in the gas coming from the discharge in ambient air. It was found that the actual product composition strongly depends on the gas temperature. At low input power with the low gas temperature, O-3 density was high and the NO and NO2 densities were very low. At a specific input power (and the gas temperature) O-3 disappeared, while NO density started to increase gradually and NO2 density increased steeply. N2O5 density increased at low input power but decreased suddenly at the same temperature when O-3 density decreased. The influence of the gas temperature on the discharge product composition was also confirmed by the 0D chemical kinetic model and by temperature measurement. The maximal ozone density reached approximately 2.7 x 10(23) m(-3) for the input power below 150 W and the gas mixture N-2:O-2 40:60. Density of 2.6 x 10(22) m(-3) was obtained for NO2 in the same gas mixture above 250 W.

Název v anglickém jazyce

Chemical composition of gaseous products generated by coplanar barrier discharge in air and N-2/O-2 mixtures

Popis výsledku anglicky

Absolute densities of gaseous products generated by coplanar dielectric barrier discharge in N-2/O-2 mixtures and in ambient air were determined using Fourier transform infrared (FTIR) spectroscopy. A theoretical model containing up to four molecular absorption cross sections was used to split the peaks overlapping in the FTIR spectra. The product densities were determined for a wide range of applied input powers (100-400 W). Ozone (O-3) and nitrogen oxides (N2O, NO, NO2 and N2O5) were identified as the stable products of the discharge in N-2/O-2 mixtures, HNO2, HNO3 and CO2 were steadily present in the gas coming from the discharge in ambient air. It was found that the actual product composition strongly depends on the gas temperature. At low input power with the low gas temperature, O-3 density was high and the NO and NO2 densities were very low. At a specific input power (and the gas temperature) O-3 disappeared, while NO density started to increase gradually and NO2 density increased steeply. N2O5 density increased at low input power but decreased suddenly at the same temperature when O-3 density decreased. The influence of the gas temperature on the discharge product composition was also confirmed by the 0D chemical kinetic model and by temperature measurement. The maximal ozone density reached approximately 2.7 x 10(23) m(-3) for the input power below 150 W and the gas mixture N-2:O-2 40:60. Density of 2.6 x 10(22) m(-3) was obtained for NO2 in the same gas mixture above 250 W.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/LM2018097" target="_blank" >LM2018097: Centrum výzkumu a vývoje plazmatu a nanotechnologických povrchových úprav</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

PLASMA SOURCES SCIENCE & TECHNOLOGY

ISSN

0963-0252

e-ISSN

1361-6595

Svazek periodika

31

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

115011

Kód UT WoS článku

000885188500001

EID výsledku v databázi Scopus

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