期刊
CATALYSIS SCIENCE & TECHNOLOGY
卷 6, 期 7, 页码 2427-2434出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cy01241d
关键词
-
资金
- Natural Science Foundation of China [21276142, 21476129]
In this paper, a series of well-dispersed nickel-ceria catalysts with high surface area were successfully fabricated using a simple solvothermal approach and characterized by XRD, TEM, EDS, N-2-sorption, Raman and TPR techniques. The results show that the amount of nickel species can have an impact on the morphology of the nickel-ceria catalysts, i.e. the hollow structure, particle size and porous structures. The prepared nickel-ceria samples (with the atomic ratio Ni : Ce (At% (Ni/Ce)) at approximately 6.58%) exhibit high catalytic performance in carbon monoxide (CO) oxidation with 100% conversion at 200 degrees C. The XRD, Raman, XPS and H-2-TPR data confirm that the nickel species are the main promoting factor in the catalysis, including the doped nickel species, highly dispersed free NiO and the interfacial Ni-[O]-Ce structures. Further, the as-prepared nickel-ceria catalysts show high stability in the catalysis.
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