期刊
RSC ADVANCES
卷 6, 期 114, 页码 113630-113647出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra21740k
关键词
-
资金
- National Basic Research Program of China (973 program) [2012CB21500203]
- National Nature Science Foundation of China [21507014]
- China Postdoctoral Science Foundation [2014M550451]
- Nature Science Foundation of Guangxi Province [2014GXNSFBA118036]
- Project of Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology [2014K005]
For NO reduction by CO with CuO/Ce20M1Ox (M = Zr, Cr, Mn, Fe, Co, Sn) catalysts, the results imply that for fresh catalysts, the doping variable valence Mx+ is more conducive to an increase in the oxygen vacancies, the content of unsaturated metal cations on the surface, and the reduction capacity. The Cu/CeMn and Cu/CeSn samples exhibited better potential; after aging, the samples doped with Cr6+, Mn4+, and Co3+ had poor physicochemical properties, but doping with Zr4+, Fe3+, and Sn4+ resulted in better thermal stability. The Cu/CeSn sample exhibited the best catalytic properties and thermal stability, which are closely related to its structure retention, oxygen vacancies, the content of the surface chemical adsorption oxygen and surface unsaturated metal cation, and reduction capacity, whether it is fresh or aged. Finally, in order to further understand the interaction between the CO and NO probe molecules with the catalyst surface, a possible reaction mechanism for NO reduction by CO on a Cu/CeSn catalyst is tentatively proposed.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据