摘要
用γ射线辐照法制备出以γ—Ａｌ２Ｏ３为载体的纳米级ＣｕＯ（８Ｗｔ．％．１２ｎｍ）－Ｐｄ（０．５ｗｔ％．１０ｎｍ）催化剂在ＣＯ氧化反应中有很高的活性，当催化反应温度为１１０℃、１４５℃和１４８℃时，则ＣＯ转化率分别为５％、５０％和１００％．此催化剂在７５０℃热处理后，仍显示较高的活性，表明它具有一定的热稳定性。
Abstract ?Al2O3 -supported nanocrystalline CuO (8 wt%, 12nm)-Pd (0.5 wt%, 10nm) catalyst has been prepared by the γ-radiation method. The catalyst is very active in CO oxidation reaction. It start operating at relatively low temperature (110℃), its light-off-temperature (50% CO conversion) is 145℃, and 100% CO conversion can be achieved at 148℃. The catalyst shows certain thermal stability on its catalytic activity after thermal treatment at as high as 750℃.
