Nanocrystalline Cerium Oxide Catalytic Materials

Tschöpe, A.; Ying, J. Y.

doi:10.1007/978-94-011-1076-1_81

A. Tschöpe³ &
J. Y. Ying³

Part of the book series: NATO ASI Series ((NSSE,volume 260))

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Abstract

Nanocrystalline cerium oxide was synthesized by inert gas condensation of a metallic cerium precursor, followed by oxidation. The structure of the resulting material was characterized by transmission electron microscopy (TEM), wide-angle x-ray diffraction (XRD) and nitrogen adsorption. Selective catalytic reduction of sulfur dioxide by carbon monoxide on nanocrystalline cerium oxide was studied in a microreactor, and compared to that of conventional cerium dioxide synthesized by the decomposition of cerium acetate. The nanocrystalline cerium oxide catalyst enabled 100% conversion at 500°C, about 100°C lower than the temperature needed in conventional cerium dioxide catalysts. The higher activity can be related to the considerable oxygen deficiency of the nanocrystalline cerium oxide due to incomplete oxidation. The nonstoichiometry of the nanocrystalline cerium oxide was confirmed by thermogravimetric analysis (TGA) and x-ray photoelectron spectroscopy (XPS).

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Authors and Affiliations

Department of Chemical Engineering, Massachusetts Institute of Technology, 25 Ames Street, Cambridge, MA, 02139, USA
A. Tschöpe & J. Y. Ying

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A. Tschöpe
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J. Y. Ying
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Editors and Affiliations

Department of Physics and Astronomy, University of Delaware, Newark, DE, USA
George C. Hadjipanayis
Materials Science Division, Argonne National Laboratory, Argonne, IL, USA
Richard W. Siegel

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Tschöpe, A., Ying, J.Y. (1994). Nanocrystalline Cerium Oxide Catalytic Materials. In: Hadjipanayis, G.C., Siegel, R.W. (eds) Nanophase Materials. NATO ASI Series, vol 260. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1076-1_81

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DOI: https://doi.org/10.1007/978-94-011-1076-1_81
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-4469-1
Online ISBN: 978-94-011-1076-1
eBook Packages: Springer Book Archive

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