Optical emission spectroscopy study in CO2 methanation with plasma

Methanation of CO2 is a key technology to realize a sustainable society. The reactions should be driven at a lower temperatures from the viewpoint of catalyst stability. Methanation with plasma catalysis can drive reactions at lower temperature than thermal catalysis. However, the reaction mechanism...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2023-07, Vol.62 (SI), p.SI1008
Main Authors: Toko, Susumu, Hasegawa, Taiki, Okumura, Takamasa, Kamataki, Kunihiro, Takenaka, Kosuke, Koga, Kazunori, Shiratani, Masaharu, Setsuhara, Yuichi
Format: Article
Language:English
Subjects:
Carbon dioxide
Catalysis
Emission analysis
Emission spectroscopy
Methanation
Optical emission spectroscopy
plasma catalysis
Pressure dependence
Reaction mechanisms
vibrational temperature
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Summary:Methanation of CO2 is a key technology to realize a sustainable society. The reactions should be driven at a lower temperatures from the viewpoint of catalyst stability. Methanation with plasma catalysis can drive reactions at lower temperature than thermal catalysis. However, the reaction mechanism is little understood due to the complexity of the interactions. In this study, we investigated the power and pressure dependence of the methanation efficiency when only plasma is used as a fundamental research. We discuss how these parameters change the vibrational temperature and active species density and affect the methanation efficiency using optical emission spectroscopy.
ISSN:0021-4922
1347-4065
DOI:10.35848/1347-4065/acc66a