一、绪言在以过渡性金属氧化物为催化剂的甲烷氧化反应过程中,只进行完全氧化反应(生成CO、CO_2),不生成作为氧化偶联生成物的C_2化合物(C_2H_4、C_2H_6)。然而,若在过渡性金属氧化物中添加碱金属盐,即可得到用于甲烷氧化偶联反应的有效催化剂。表1中表示用氧化镍作为过渡性金属氧化物、锂作为碱金属进行甲烷氧化反应的结果。这里应该引起注意的是,表现出这样的良好特性,添加了锂的卤化物(LiCl、LiBr)催 INTRODUCTION In the process of methane oxidation with transition metal oxides as catalyst, only complete oxidation (CO, CO 2) is generated and C 2 H 2 (C 2 H 4, C 2 H 6) as oxidative coupling products are not generated. However, if an alkali metal salt is added to the transition metal oxide, an effective catalyst for the methane oxidation coupling reaction can be obtained. Table 1 shows the results of the methane oxidation reaction using lithium oxide as the transition metal oxide and lithium as the alkali metal. It should be noted here that, to show such good features, the addition of a lithium halide (LiCl, LiBr) catalyst