中文摘要：

利用溶胶-凝胶法合成了Mo-Fe催化剂,用对二甲苯的选择性氧化作为探针反应,对其进行了催化剂的活性评价,结果表明：金属原子数的最佳配比为n（Mo）∶n（Fe）∶n（Co）=2.4∶1∶0.02,这时的催化剂活性最高;Mo-Fe系催化剂的活性组分为Fe2（MoO4）3与少量的MoO3,它们在催化氧化过程中,存在着协同作用,FTIR和XRD均得到了证实。该研究为工业装置的技术改造提供了较好的实验依据。

英文摘要：

The effect of catalyst atomic ratio on the performance of selective oxidation of p-xylene as a probe reaction over Mo-Fe catalysts prepared by sol-gel method was investigated. The catalyst evaluation results show that the optimum catalyst atomic ratio is n（Mo） ： n（Fe） ： n（Co）=2. 4 ： 1 ： 0. 02 with a high catalytic activity. The composition of the catalyst is Fe2 （MoO4）3 and a little MoO3 having a cooperative effects during the oxidation of p-xylene, which was detected by XRD and FTIR. This study could provide experimental data for the technical reform of industry equipment.