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Mesoporous CeO2 and CuO-loaded mesoporous CeO2: Synthesis, characterization, and CO catalytic oxidation property

✍ Scribed by Weihua Shen; Xiaoping Dong; Yufng Zhu; Hangrong Chen; Jianlin Shi

Publisher: Elsevier Science
Year: 2005
Tongue: English
Weight: 337 KB
Volume: 85
Category: Article
ISSN: 1387-1811
DOI: 10.1016/j.micromeso.2005.06.006

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✦ Synopsis

Mesoporous cerium dioxide has been synthesized using the ordered mesoporous silica KIT-6 as hard template. A series of different amounts of CuO have been modified to this CeO 2 replica by wet impregnation. The XRD, SEM, TEM, N2 sorption measurement, and the CO catalytic oxidation reaction have been adopted to characterize those materials. CuO can be homogeneously loaded on this ceria replica. Compared with the porous CeO 2 directly decomposed from the cerium nitrate hydrate, this CeO 2 shows high catalytic reactivity for the CO oxidation, the T 50 on this ceria replica is 83 K lower than on the decomposed ceria, and the CuO-loaded mesoporous ceria show more active for this catalytic reaction, the lowest T 50 is only 389 K achieved at the 20% CuO loading.

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