采用程序升温表面反应方法研究甲烷在Mo/HZSM-5催化剂上的反应过程.在反应初始阶段发现有H_2O,CO_2和CO生成.随着这些产物的消失,乙烯和苯的含量达到最大值。认为在反应初始阶段,甲烷与催化剂发生氧化还原相互作用形成新的活性相,从而使甲烷催化转化为乙烯和苯.活性相的形成需要Mo和HZSM-5同时存在.当Mo含量为2％～3％时,对生成乙烯和苯最为有利. The reaction process of methane on Mo / HZSM-5 catalyst was studied by temperature-programmed surface reaction method, and H 2 O, CO 2 and CO were found in the initial stage of the reaction, with the disappearance of these products, the content of ethylene and benzene reached the maximum. It is considered that at the initial stage of the reaction, the methane reacts with the catalyst to form a new active phase so that the methane is catalytically converted into ethylene and benzene. The formation of an active phase requires the simultaneous presence of Mo and HZSM-5. When the Mo content is 2% 3%, the most favorable to generate ethylene and benzene.