文献类型：期刊文献

英文题名：The role of iron oxide in the highly effective Fe-modified Co₃O₄ catalyst for low-temperature CO oxidation

作者：Li, Jie[1,2];Lu, Guanzhong[1,2,3];Wu, Guisheng[3];Mao, Dongsen[3];Guo, Yanglong[1,2];Wang, Yanqin[1,2];Guo, Yun[1,2]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China;[3]Shanghai Inst Technol, Res Inst Appl Catalysis, Shanghai 200235, Peoples R China

年份：2013

卷号：3

期号：30

起止页码：12409

外文期刊名：RSC ADVANCES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000321623200062)】；

基金：This project was financially supported by the National Natural Science Foundation of China (21273150), the National Basic Research Program of China (2010CB732300, 2013CB933201), the national high technology research and development program of China (2012AA062703), the Fundamental Research Funds for the Central Universities, the "ShuGuang'' Project (10GG23) and the Leading Academic Discipline Project (J51503) of Shanghai Municipal Education Commission and Shanghai Education Development Foundation.

语种：英文

摘要：A series of iron modified cobalt oxide catalysts (FeaCobOx (b : a = M-Co : M-Fe, 10 < x < 15)) were prepared by a co-precipitation method, characterized by nitrogen adsorption-desorption, XRD, Raman spectroscopy, XPS, H-2-temperature programmed reduction, CO-temperature-programmed desorption, O-2-temperature-programmed desorption and time-resolved CO titration, and their catalytic activities for CO oxidation were evaluated. When Co : Fe is 8 : 2 (mol), the Fe2Co8Ox catalyst exhibits a very high catalytic activity, in which CO can be completely converted to CO2 at -80 degrees C. The results show that the addition of Fe to Co3O4 can increase its surface area and inhibit the agglomeration of iron oxide, improve the reduction behaviour of Co3O4, optimize the ratio of Co3+ : Co2+ on the catalyst surface, and promote CO adsorption and CO2 desorption on the catalyst surface. The oxygen species on Fe2Co8Ox are more active than those on Co3O4, and when the feed gas is lacking in oxygen the lattice oxygen of Fe2Co8Ox can easily overflow to the surface to participate in the oxidation of CO.