钼基分子筛催化剂 ,由于不同分子筛的孔道大小及孔道形状不同 ,对甲烷芳构化反应表现出不同的催化性能 .具有 8元环孔道结构的小孔ERS 7分子筛没有催化活性 ,说明甲烷的芳构化反应离不开分子筛孔道的择形作用 ,较小的孔道中不能生成苯等芳烃 .具有 10元环孔道结构的ZSM 5 ,ZSM 11和ZRP 1三种分子筛具有较好的催化性能 ,但由于其孔道大小及孔道形状的差别在催化行为上表现出一定的差异 .具有 10元环和 12元环孔道结构的MCM 2 2分子筛 ,尤其对苯等轻芳烃而言 ,催化性能最佳 .具有 12元环孔道结构的JQX 1以及中孔分子筛SBA 15 ,虽然具有一定的催化性能 ,但活性较低 .研究结果表明 ,孔道大小与苯分子动态直径相近或孔道稍大的分子筛是催化甲烷芳构化反应的良好载体 ,孔道过大或过小都不利于苯和萘等芳烃的生成 Due to the different pore sizes and pore shapes of different zeolites, molybdenum-based molecular sieve catalysts show different catalytic properties for the aromatization of methane. The ERS 7 zeolite with 8-membered pore structure has no catalytic activity, indicating that the aromatics The reaction can not be separated from the pore shape of molecular sieve, the smaller pores can not generate benzene and other aromatic hydrocarbons.ZSM 5, ZSM 11 and ZRP 1 with 10-membered ring pore structure have good catalytic performance, but due to The differences of pore size and pore shape show some differences in catalytic behavior.The MCM 2 2 molecular sieve with 10-membered rings and 12-membered ring channels, especially for light aromatic hydrocarbons such as benzene, has the best catalytic performance with 12 Although the JQX 1 of mesoporous pore structure and mesoporous molecular sieve SBA 15 have a certain catalytic activity, the activity of JQX 1 is lower than that of the mesoporous molecular sieve, and the results show that zeolite with a pore size similar to that of benzene molecule or with a slightly larger pore size is a catalyst for methane aromatization A good carrier for the reaction, the channel is too large or too small are not conducive to the formation of aromatic hydrocarbons such as benzene and naphthalene