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A Study of Water Influence on Carbon Monoxide Adsorption and Oxidation on Nanocrystals of: γ-Fe2O3, Au/Fe2O3 and MnxZn1-xFe2O4

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Abstract:

In this paper the adsorption and oxidation of CO on nanocrystalline Au/γ-Fe2O3, Au/α- Fe2O3, γ-Fe2O3 and a series of mixed ferrite with MnxZn1-xFe2O4 composition are investigated. The catalysts were prepared by co-precipitation method and characterized using X-ray diffraction (XRPD), specific surface (BET), transition electron spectroscopy (TEM) and magnetization measurements. A temperature programmed desorption (TPD) study of the water and CO interaction with nanocrystalline adsorbents is presented. The catalytic activities towards CO oxidation increased in the following order: γ-Fe2O3 < MnxZn1-xFe2O4 < Au/γ-Fe2O3 .

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Periodical:

Materials Science Forum (Volume 518)

Pages:

85-90

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.518.85

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Online since:

July 2006

Authors:

V. Dondur, Nenad Radić, Boško Grbić, Miha Drofenik

Keywords:

CO Adsorption, Ferrite, Oxidation, Supported Gold Catalysts

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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