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Characterization and Catalytic Properties of CuOx/CeO2 Nanocomposite Particles

Published online by Cambridge University Press:  02 July 2020

B. Skårman ,
T. Nakayama ,
K. Niihara  and
L.R. Wallenberg
B. Skårman
Affiliation:
Dept. of Inorganic Chemistry 2,National Centre for HREM, Lund University, Lund, Sweden
T. Nakayama
Affiliation:
Institute of Scientific and Industrial Research (ISIR), Osaka University, Osaka, Japan
K. Niihara
Affiliation:
Institute of Scientific and Industrial Research (ISIR), Osaka University, Osaka, Japan
L.R. Wallenberg
Affiliation:
Dept. of Inorganic Chemistry 2,National Centre for HREM, Lund University, Lund, Sweden
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Abstract

Cerium dioxide (ceria) is known for its excellent oxygen storage capacity (OSC) and redox properties. Addition of the transition metal oxide CuOx, improves the low-temperature oxidation activity of ceria by a synergistic mechanism. It has been shown that copper oxide on the high energy CeO2{001}surface, is exceedingly more efficient than on the statistically dominating lowenergy {111} surface for obtaining a high catalytic conversion rate of CO to CO2.:To investigate morphology and composition effects, in a situation which is closer to an industrial catalyst, we have produced nanocomposite particles in the CuOx/CeO2 system with different composition, size, and nanostructured morphology (Fig. la-d) utilizing the inert gas condensation (IGC) technique.

The samples were characterized in a JEM 4000EX HRTEM, and a JSM-840A SEM, interfaced with a Link AN 10000 EDS system. The specific surface area was measured using the adsorption of N2 (BET method).

Type
Characterization of Catalysts (Organized by S. Bradley)
Information
Microscopy and Microanalysis , Volume 7 , Issue S2: Proceedings: Microscopy & Microanalysis 2001, Microscopy Society of America 59th Annual Meeting, Microbeam Analysis Society 35th Annual Meeting, Long Beach, California August 5-9, 2001 , August 2001 , pp. 1074 - 1075
Copyright
Copyright © Microscopy Society of America 2001

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References

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