Ｌｉ／ＭｇＯ甲烷氧化偶联催化剂引入铌的氧化物可降低活性温度，７５０℃以下便达到最高Ｃ２烃产率．饴与锂、镁有多种结合方式，引入方法对活性测试结果有重要影响．铌不与镁紧密结合且分布于锂、镁之间时作用最好．实验结果分析表明，铌的作用是由于Ｎｂ２Ｏ５的Ｎ型半导性提高了催化剂转移电子的能力，且使Ｌｉ／ＭｇＯ催化剂形成多孔缺陷结构，并通过其酸性作用改变Ｌｉ／ＭｇＯ的结合状态，使活性增加． Li / MgO Methane Oxidation Coupling Catalyst The introduction of niobium oxide reduces the activation temperature and reaches the highest C2 hydrocarbon yield below 750 ° C.饴 with lithium, magnesium, a variety of combinations, the introduction of the method of activity test results have a significant impact. Niobium is not intimately associated with magnesium and functions best when distributed between lithium and magnesium. The experimental results show that the effect of niobium is that the N type semiconducting Nb2O5 improves the ability of the catalyst to transfer electrons and the porous defect structure of the Li / MgO catalyst and changes the binding state of Li / MgO through the acid action Activity increased.