【摘要】 研究了微波场下甲烷在具有Bi2O3结构的固态氧离子导体上氧化偶联反应行为．与常规加热条件下的反应结果相比较，微波辐照下的反应有如下特点；（1）在达到相同甲烷转化率时，微波辐照下所需床层温度要远低于常规加热条件下所需床层温度；（2）微波辐照下，甲烷氧化偶联产物中C2烃的选择性普遍较高，在低温区尤为突出．微波场下甲烷偶联产物乙烷、乙烯的再氧化得到一定程度的抑制，致使微波场下的甲烷氧化偶联反应通常有较低的烯／烷比．更多还原

【Abstract】 The oxidative coupling of methane over 6-Bi2O3 phase solid oxygen ion conductors irradiated by microwave has been studied. Compared with the conventional heating mode, the use of microwave irradiation appears to have some beneficial effects: (1) at the same methane conversion level, the temperature of catalyst bed is much lower with the microwave irradiation than with the conventional heating mode, this is due to "microwave hot spot"effect; (2) the C2 selectivity obtained with microwave irradiation is much higher than with conventional heating especially in the lower temperature range. This difference might arise from the reduction of oxidation products (ethane, ethylene) in the gas phase under mi-crowave irradiation.更多还原