Abstract
In this study, Al-Ce alloy ribbons with Ce content (at.%) ranging from 6% to 12% were prepared by a simple melt-spinning method. The microstructure, phase structure, porosity and catalytic CO oxidation activity of dealloyed and calcined ribbons were analyzed. The results revealed that all the CeO2 catalysts showed a nanorod framework structure, and the size of the CeO2 nanorods became finer with the decrease of Ce content in the precursors. The specific surface area was the largest and porous size was the smallest for dealloyed and calcined Al92Ce8 ribbons. The CeO2 nanorod prepared from the Al92Ce8 precursor exhibited the highest catalytic activity, with total CO conversion at 320°C. The larger specific surface area could provide more gas diffusion paths and richer reaction active sites for CO oxidation.
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This work was supported by the National Natural Science Foundation of China (Grant Nos. 51771141, 51371135 and 51671155).
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Wang, H., Zhang, X., Duan, D. et al. Effects of Ce Content in Precursor Alloys on Catalytic Properties of CeO2 Nanorods. JOM 72, 706–710 (2020). https://doi.org/10.1007/s11837-019-03957-z
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DOI: https://doi.org/10.1007/s11837-019-03957-z