Issue 12, 2013

Inverse CeO2/CuO catalysts prepared by different precipitants for preferential CO oxidation in hydrogen-rich streams

Abstract

The inverse CeO2/CuO catalysts were prepared by different precipitants, and characterized via XRD, ICP, SEM, H2-TPR, Raman, TEM and N2 adsorption–desorption techniques. The study showed that the inverse CeO2/CuO configurations were formed and copper is mainly present in the form of bulk CuO in the as-synthesized catalysts. It was found that the length of the contact interface between CeO2 and CuO was closely associated with the crystal size of CeO2 and CuO. The CeO2/CuO catalysts using urea, NaOH and TMAH (tetramethylammonium hydroxide) as precipitants presented a better catalytic performance for CO oxidation below 185 °C in the hydrogen-rich streams due to some amount of copper–ceria interfacial sites in the catalysts.

Graphical abstract: Inverse CeO2/CuO catalysts prepared by different precipitants for preferential CO oxidation in hydrogen-rich streams

Article information

Article type
Paper
Submitted
09 Jul 2013
Accepted
03 Sep 2013
First published
03 Sep 2013

Catal. Sci. Technol., 2013,3, 3163-3172

Inverse CeO2/CuO catalysts prepared by different precipitants for preferential CO oxidation in hydrogen-rich streams

S. Zeng, Y. Wang, B. Qin, X. Gu, H. Su, L. Li and K. Liu, Catal. Sci. Technol., 2013, 3, 3163 DOI: 10.1039/C3CY00478C

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