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- W4313490930 abstract "Abstract We report a single atom Rh 1 /CeO 2 catalyst prepared by the high temperature (800 °C) atom trapping (AT) method which is stable under both oxidative and reductive conditions. Infrared spectroscopic and electron microscopy characterization revealed the presence of exclusively ionic Rh species. These ionic Rh species are stable even under reducing conditions (CO at 300 °C) due to the strong interaction between Rh and CeO 2 achieved by the AT method, leading to high and reproducible CO oxidation activity regardless of whether the catalyst is reduced or oxidized. In contrast, ionic Rh species in catalysts synthesized by a conventional impregnation approach (e. g., calcined at 350 °C) can be readily reduced to form Rh nanoclusters/nanoparticles, which are easily oxidized under oxidative conditions, leading to loss of catalytic performance. The single atom Rh 1 /CeO 2 catalysts synthesized by the AT method do not exhibit changes during redox cycling hence are promising catalysts for emission control where redox cycling is encountered, and severe oxidation (fuel cut) leads to loss of performance." @default.
- W4313490930 created "2023-01-06" @default.
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- W4313490930 date "2023-01-04" @default.
- W4313490930 modified "2023-10-02" @default.
- W4313490930 title "Highly Active and Stable Single Atom Rh <sub>1</sub> /CeO <sub>2</sub> Catalyst for CO Oxidation during Redox Cycling" @default.
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- W4313490930 doi "https://doi.org/10.1002/cctc.202201210" @default.
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