以SBA15为载体,采用后修饰法制备了Ag/SBA15催化剂.XRD和TEM结果表明,金属Ag粒子均匀分散于SBA15的纳米孔道中,粒子平均大小为4～5nm.同时,负载金属Ag纳米粒子后,载体的介孔结构仍然能很好地保持.CO催化氧化测试结果表明,Ag/SBA15具有很高的催化活性,120℃时就能使CO完全氧化.而在富H2气氛下,80℃时CO的转化率达到最大值(48%),此时O2的选择性为28%.高温H2还原是活化Ag/SBA15的必要步骤. The Ag / SBA15 catalyst was prepared by post-modification method using SBA15 as carrier.The results of XRD and TEM show that the Ag particles are uniformly dispersed in the nano-pores of SBA15 and the average particle size is 4 ~ 5 nm.At the same time, , The mesoporous structure of the support is still well maintained.CO catalytic oxidation test results show that Ag / SBA15 has a high catalytic activity, can make CO fully oxidized at 120 ° C. In the H2-rich atmosphere at 80 ℃ The CO conversion reached the maximum (48%) with a O2 selectivity of 28% .High temperature H2 reduction was a necessary step to activate Ag / SBA15.