At atmospheric pressure and ambient temperature, the hydrogenation coupling of methane was studied by using pulse corona plasma and its synergism with catalyst. The results showed that (ⅰ) under pulse corona plasma, the coupling of methane could be fulfilled by the addition of hydrogen, and with the increase of the amount of hydrogen, the conversion of methane and the yield of C2 hydrocarbon increased, and the deposit of carbon decreased; (ⅱ) the conversion of methane was affected by pulse voltage and repeated frequency; (ⅲ) in the system, the addition of Ni/g-Al2O3 could improve the distribution of C2 hydrocarbon; (ⅳ) the activity of Ni/g-Al2O3 prepared by cold plasma was better than that by chemical methods. The experiment opened up a new technical route of the coupling of methane.
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