纳米Au/Fe_2O_3-MO_x催化剂的制备及低温催化氧化CO的研究  

Preparation of Nano Au/Fe_2O_3-MO_x Catalyst and Its Catalytic Performance for CO Low Temperature Oxidation

作　　者：孟根图雅[1] 曹星辉[1] 贾美林[1] 照日格图[1] 

机构地区：[1]内蒙古师范大学天然气化工与材料科学实验室,呼和浩特010022

出　　处：《材料工程》2008年第10期356-357,362,共3页Journal of Materials Engineering

基　　金：教育部新世纪优秀人才支持计划资助项目(NCET-06-0268);国家自然科学基金资助项目(20563003);内蒙古自治区自然科学重点项目基金资助项目(200508010203)

摘　　要：用沉积-沉淀法制备了纳米Au/Fe2O3-MOx(M=La和Ce)系列催化剂,考察了催化剂对于CO的低温催化氧化性能,并通过XRD,BET和AAS等表征手段对催化剂进行了表征,分析了稀土氧化物的掺杂对Au/Fe2O3催化剂性能的影响。结果表明:CeO2的加入能够有效提高Au/Fe2O3催化剂的催化活性,而La2O3的加入对催化剂性能没有明显的影响。A series of Au/Fe2 O3-MOx （M= La ＆ Ce） catalysts were prepared by deposition-precipitati- on method and the catalytic performance for CO low temperature oxidation over these catalysts was in- vestigated. In order to analysis the influence of the addition of rare earth oxide, these catalysts were characterized by XRD, BET and AAS. The results indicated that the addition of CeO2 could improve the activity while no obvious effect was found with addition of La2O3.

关 键 词：金催化剂 CO催化氧化 FE2O3 CEO2 LA2O3 

分 类 号：O643.3[理学—物理化学]