: Application of radio-frequency (RF) plasma as an alternative technology for the decomposition of carbon dioxide with methane gas is demonstrated. The results of this study revealed that in plasma, the best CO 2 /CH 4 /Ar decomposition fraction of carbon dioxide was 60É0%, which occurs around 316¡C in the condition designed for 5% feeding concentration of 5% CO 2 , feeding concentration of 20 torr operation pressure, 100 sccm total gas CH 4 , Ñow rate and 90 watts input power wattage. The CH, and radicals CH 2 CH 3 obtained from the destruction of could result e †ectively in high decomposi-CH 4 tion of in the plasma reactor. The optimal mathematical models based on CO 2 the experimental data obtained were also developed and tested by means of sensitivity analysis, which shows that the input power wattage (W) was the most sensitive parameter for the decomposition. 1998 Society of Chemical CO 2 ( Industry J. Chem. T echnol. Biotechnol. 73, 432È442 (1998)
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