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- W2010457675 abstract "We report on the synthesis of highly homogeneous mixed La/Ce-oxides via a microemulsion-templated approach, and their evaluation as active supports for Au in the water gas shift (WGS) reaction. Both structure and reducibility of the oxides could be tailored by adjusting the La content across the entire range of La:Ce-ratios. The reducibility of the Au-free oxides shows an optimum at ∼25% La content, which can be traced back to improved oxygen mobility due to formation of oxygen vacancies and to the formation of more strongly bound oxygen upon La addition. Deposition of Au onto these oxides gives rise to an additional, low-temperature reduction peak, presumably due to hydrogen spill-over from the noble metal onto the oxide support. The WGS activity of Au/LaxCe1−xO2−0.5x catalysts correlates closely with the reducibility of the oxide supports, and hence with La content, demonstrating that carefully controlled synthesis of nanostructured catalysts with uniform, tailored composition allows for fine control of reactive properties of these materials, and might ultimately open the way towards a more rational design of catalysts." @default.
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- W2010457675 date "2010-08-01" @default.
- W2010457675 modified "2023-10-16" @default.
- W2010457675 title "Au-mixed lanthanum/cerium oxide catalysts for water gas shift" @default.
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- W2010457675 doi "https://doi.org/10.1016/j.apcatb.2010.06.004" @default.
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