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3D spherical Cr-Ce mixed oxides were successfully synthesized via the hydrothermal method in different solvents, and their efficiencies of catalytic oxidation NO were evaluated. Among all catalysts, CrCeEt (ethanol adopted as the solvent) exhibited the best low-temperature catalytic NO oxidation performance, which was over 40% at 200 °C and reached 50% at 230 °C. The high activity at low temperature...
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