纳米Co_3O_4的制备、表征及CO低温催化氧化  

Preparation, Characterization and CO \=Oxidation of Nanometer Co\-3O\-4

作　　者：贾明君[1] 张文祥[1] 陶玉国 王桂英[1] 崔湘浩[1] 张春雷[1] 吴通好[1] 董国强[2,3] 李雪梅[2,3] 

机构地区：[1]吉林大学化学系 [2]大庆石油管理局物探公司仪修厂 [3]雁北师范学院化学系

出　　处：《高等学校化学学报》1999年第4期637-639,共3页Chemical Journal of Chinese Universities

基　　金：长春应用化学科学研究中心资助

摘　　要：ＣＯ的常温催化氧化由于在消除环境污染、空气净化、ＣＯ传感器、封闭式ＣＯ２激光器及密闭系统内消除ＣＯ等方面的实用价值［１］而颇受关注．已报道的ＣＯ催化氧化催化剂有Ｈｏｐｃａｌｉｔｅ［２］、复合氧化物［３］、贵金属［４，５］等，但这些催化剂都存在低温下活...Various nanometer Co\-3O\-4 samples were prepared and the catalytic performance of CO oxidation were examined. It was found that the activities of the catalysts were greatly changed with variation of the preparation methods and pretreatment conditions. Among the samples tested, Co\-3O\-4 prepared by using dodecylbenzene sulfonic acid sodium salt(DBS) as the surfactant, calcined at 300 showed the highest activity and it was able to oxidize completely CO even at \{-78 \}. Characterization of these samples by XRD and BET means showed that the catalytic acitivity increased with the decrease of the average particle size, suggests that the average particle size of nanometer Co\-3O\-4 samples is the main controlling factor of the catalytic activity.\=

关 键 词：纳米 一氧化碳 氧化 催化剂 四氧化三钴 

分 类 号：O643.36[理学—物理化学] O613.71[理学—化学]