Citation:
Zhu Aimin, Zhang Xiuling, Gong Weimin, Dai Bin, Zhang Baoan. Coupling of Methane Under Pulse Corona Plasma Ⅱ. Effect of Gas Additives[J]. Chinese Journal of Applied Chemistry,
;1999, 16(4): 70-73.
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The functions of several gas additives: hydrogen, nitrogen, helium, carbon dioxide and oxygen on the dehydrogenative coupling of methane under pulse corone plasma at ambient temperature and atmospheric pressure have been examined. The results showed that hydrogen has hardly any influences on the coupling of methane. Nitrogen and helium are helpful to the formation of ethane and ethylene and restrain the acetylene formation to a certain degree. Acetylene remains as the main component (>75%) among C2 products. Increasing the ratio of carbon dioxide to methane causes an increase of methane conversion, whereas C2H2 selectivity decreases dramatically after a relative stable region and the C2H6 and C2H4 selectivities show little change. The C2 yield exibits a maximum at a CO2/CH4 ratio of 0.2. Increasing the ratio of oxygen to methane increases the methane conversion but C2 yield only slightly increases at O2/CH4 ratio less than 0.16.
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Keywords:
- methane,
- dehydrogenative coupling,
- pulse corona plasma,
- gas additive
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