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对几种含有Ｂｉ＿２Ｏ＿３或ＴｈＯ＿２的催化剂的结构和它们在甲烷氧化偶联反应中的催化行为进行考察。具有缺陷ＣａＦ＿２结构的催化剂比其它结构类型的催化剂有更高的甲烷转化率和Ｃ＿２烃选择性，这可能与这种结构类型的催化剂有效强的转化气相Ｏ＿２为表面活性氧物种的能力有关。由Ｌａ＿２Ｏ＿３对ＴｈＯ＿２进行掺杂可构成催化剂性能好、热稳定性高的具有缺陷ＣａＦ＿２结构的催化剂。应用原位激光拉曼光谱，首次在工作态的甲烷氧化偶联催化剂上检测到超氧物种Ｏ＿２￣－。
The structures of several catalysts containing Bi_2O_3 or ThO_2 and their catalytic behavior in methane oxidative coupling were investigated. Catalysts with a defective CaF 2 structure have higher methane conversion and C 2 hydrocarbon selectivity than other structural types of catalysts, which may be related to the ability of this structure type catalyst to effectively convert gaseous O 2 into surface-active oxygen species. Doped by La 2 O 3 ThO 2 can form a catalyst with good performance and high thermal stability of the catalyst with defective CaF 2 structure. In situ laser Raman spectroscopy, the first time in the working state of methane oxidative coupling catalyst detected superoxide O_2 ~ -.