XPS investigation of surface oxidation and reduction in nanocrystalline CexLa1 − xO2 − y
作者： M. L. Trudeau , A. Tschöpe , J. Y. Ying
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摘要: Inert gas condensation was used to generate nanocrystalline La-doped CeO 2-x . Non-stoichiometric -based materials were found he excellent catalysts in recent studies for the selective reduction of SO 2 To understand better stoichiometry-related catalytic properties, surface chemistry , investigated through situ oxidation-reduction thermal treatments. Oxidation CO and H atmospheres performed between 30 o C 600 a reaction chamber connected an x-ray photoelectron spectrometer analytical chamber. Curve fitting target factor analysis obtain semiquantitative measurement transformation +3 +4 oxidation states during these reactions. Target very useful tool analyzing contributions corresponding Ce
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