Journal
PLASMA CHEMISTRY AND PLASMA PROCESSING
Volume 30, Issue 2, Pages 257-266Publisher
SPRINGER
DOI: 10.1007/s11090-010-9217-8
Keywords
Dry reforming; Methane; Carbon dioxide; Pulsed DC arc plasma; Syngas
Funding
- National Natural Science Foundation of China (NSFC) [20976091]
- National High Technology Research and Development Program of China [2009AA044701]
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Dry reforming of CH4 with CO2 to produce syngas was investigated in a plasma reactor without catalysts at atmospheric pressure. The reactants passed through the plasma zone and reacted in milliseconds with high conversions and selectivity due to the localized high temperature. The results showed that both conversions and selectivity were higher when using a DC arc discharge than using a pulsed DC arc. Increasing the input energy density promoted the conversions of reactants. At an input power of 204 W, the conversions of CO2 and CH4 reached 99.3 and 99.6%, respectively, and the selectivity to products was almost 100%, where the molar ratio of CO2/CH4 was 1 with the reactants flow rate of 100 ml/min. Very little coke was formed during the course of reaction. Key parameters such as the pulse frequency, the input power and the total feed flow rate were studied to find the optimum operating condition.
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