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Borchert, H. et al.

Electronic and chemical properties of nanostructured cerium dioxide doped with praseodymium.

Nanostructured doped ceria is a prospective material for catalytic applications such as the construction of membranes with mixed electronic and ionic conductivity for effective syngas production. In this article, the surface properties of nanostructured ceria doped with praseodymium have been studied by X-ray photoelectron spectroscopy, secondary ion mass spectrometry, and Fourier transform infrared spectroscopy of adsorbed carbon monoxide. The effects of supporting 1.4 wt % Pt as well as structural changes upon the reduction of the samples with methane have been investigated. While in samples without supported platinum, mainly praseodymium cations are reduced in a methane atmosphere; stronger reduction of cerium cations was found in the case of surface modification with Pt. The structural differences correlate with results from temperature-programmed reaction experiments with methane. Explanations are discussed in terms of different reaction mechanisms.[1]

References

Electronic and chemical properties of nanostructured cerium dioxide doped with praseodymium. Borchert, H., Frolova, Y.V., Kaichev, V.V., Prosvirin, I.P., Alikina, G.M., Lukashevich, A.I., Zaikovskii, V.I., Moroz, E.M., Trukhan, S.N., Ivanov, V.P., Paukshtis, E.A., Bukhtiyarov, V.I., Sadykov, V.A. The journal of physical chemistry. B, Condensed matter, materials, surfaces, interfaces & biophysical. (2005) [Pubmed]

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