用化学还原法制备了一系列银-铂催化剂,并用x-射线衍射方法进行物相分析,结果表明:只在含铂量小于10 at％和大于94 at％的范围内形成单相的银-铂合金。合金结构为置换固溶体。制得的合金催化剂经化学分析,测得其组成分别为含铂1.1 at％、5.1 at％、6.8 at％、9.7 at％和的94.6 at％。 A series of silver-platinum catalysts were prepared by chemical reduction method and phase analysis by x-ray diffraction. The results showed that single phase silver-platinum catalyst was formed only in the range of less than 10 at% and more than 94 at% Platinum alloy. Alloy structure for the replacement of solid solution. The obtained alloy catalysts were chemically analyzed and found to have a composition of 1.1 at%, 5.1 at%, 6.8 at%, 9.7 at% and 94.6 at%, respectively.