采用沉积-沉淀法再辅以微波干燥和焙烧制备了金属氧化物负载的金簇合物和小的金纳米粒子.干燥方法影响了金颗粒尺寸.在炉干燥过程中Au(Ⅲ)因部分还原而致使Au聚集.相反,在微波干燥下,因快速和加热均一而使Au(Ⅲ)得以保持,在Al_2O_3上负载的Au颗粒尺寸小至1.4 nm.该法可用于具有几种不同微波吸收效率的金属氧化物载体,如Mn O2,Al_2O_3和TiO_2.这些催化剂在低温CO氧化和硫化物选择有氧氧化反应中的催化活性比常规方法制备的更高. The metal oxide supported gold cluster and small gold nanoparticles were prepared by deposition-precipitation method followed by microwave drying and calcination.The drying method influenced the size of the gold particles.In the process of oven drying, Au (Ⅲ) Which caused the Au to aggregate.In contrast, under microwave drying, Au (III) was retained due to uniform and rapid heating, and the size of Au supported on Al 2 O 3 was as small as 1.4 nm.The proposed method can be used in several different microwave absorption efficiencies Of metal oxide supports, such as Mn O2, Al 2 O 3, and TiO 2 .The catalytic activity of these catalysts in the low-temperature CO oxidation and sulfide selective aerobic oxidation reactions is higher than that prepared by conventional methods.