【摘要】 考察了常温常压脉冲电晕等离子体作用下金属氧化物对甲烷脱氢偶联反应的催化作用 ,观察到不同催化剂在脉冲电晕等离子体作用下的催化活性差别很大 ,且对 C2 产物的分布具有一定的调变作用 .γ-Mn2 O3/γ-Al2 O3催化剂的 C2 烃收率较空白载体提高了近 2倍 ,C2 烃选择性提高 3 0 %以上 ,该催化剂与脉冲电晕等离子体的结合可使其能量效率提高 2倍以上 .提出了一种等离子体催化作用促进甲烷脱氢偶联反应的初步模型 .更多还原

【Abstract】 Under pulse corona plasma, heterogeneous catalysis of metal oxides upon the dehydrogenative coupling of methane was examined. In the presence of pulse corona plasma, the tested materials show various catalytic activities and adjust distribution of C₂ products to a certain extent. Comparing the results with a blank γ-Al₂O₃ carrier, the C₂ yield of a loaded γ-Mn₂O₃/γ-Al₂O₃ catalyst under plasma is nearly three times as large as the former and the C₂ selectivity increases over 30 percent. Combined pulse corona plasma with it, the energy efficiency increases by a factor of 3 at least. Finally, a tentative model for the dehydrogenative coupling of methane under plasma over the catalyst is proposed.更多还原