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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.
The oxidative coupling reaction of methane on solid oxygen ion conductor with Bi2O3 structure under microwave field was studied. Compared with the reaction results under conventional heating conditions, the reaction under microwave irradiation has the following characteristics: (1) when the same methane conversion rate is reached, the required bed temperature under microwave irradiation is much lower than that under conventional heating conditions (2) Under microwave irradiation, the selectivity of C2 hydrocarbons in the methane oxidation coupling products is generally high, especially in the low temperature region. Under the microwave field, the methane coupling products ethane and ethylene reoxidation are inhibited to a certain extent, so that the methane oxidative coupling reaction in the microwave field usually has a lower olefin / alkane ratio.