γ射线辐照制备的纳米催化剂CuO—Pd／γ—Al_2O_3的CO氧化活性  

High Activity of CO Oxidation over Nanocrystalline CuO-Pd/γ-Al_2O_3 Catalysts Prepared by the γ-Radiation Method

作　　者：朱英杰[1] 林培琰[1] 钱逸泰[1] 俞寿明[1] 陈祖耀[1] 张曼维[1] 

机构地区：[1]中国科学技术大学应用化学系,合肥化学物理系

出　　处：《Chinese Journal of Chemical Physics》1995年第3期279-279,共1页化学物理学报（英文）

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℃.

关 键 词：纳米级 氧化铜 一氧化碳 氧化 催化剂活性 

分 类 号：O643.36[理学—物理化学] O613.71[理学—化学]