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Production of CH<sub>4</sub> in a Low-Pressure CO<sub>2</sub>/H<sub>2</sub> Discharge with Magnetic Field
Department of Electrical Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
Department of Electrical Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
- 1 Department of Electrical Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
- 2 Department of Electrical Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
Journal of Materials Science and Chemical Engineering·Volume 03 (2015)·Pages 69–77·Published 17 December 2015·DOI10.4236/msce.2015.312011
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Abstract
Production of CH 4 has been established using a low-pressure square-pulse cross-field CO 2 /H 2 discharge with magnetic field. The conversion rate from CO 2 to CH 4 was investigated by changing the discharge parameters such as applied power and discharge distance, together with magnetic field strength. Carbon dioxide was reduced by hydrogen. The discharge took place across the magnetic field inside a glass tube. Decomposition of CO 2 and CH 4 selectivity are found to be dependent on power density. Energy efficiency for methane production is increased in a narrow discharge. Preferable improvements of CO 2 decomposition, CH 4 selectivity, and energy efficiency were established.
KeywordsCarbon DioxideMethanePulse DischargeMagnetic Field
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