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Catalytic Carbon Oxidation in The Presence of Cerium Oxide: Experimental Study and Modeling of The Effect of Oxygen Concentration

✍ Scribed by M. Issa; H. Mahzoul; A. Brillard; J.-F. Brilhac

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
519 KB
Volume
32
Category
Article
ISSN
0930-7516

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✦ Synopsis

Abstract

The catalytic combustion of carbon black (CB) used as a model of diesel soot in tight contact with a commercial ceria (CeO~2~) was investigated. Oxygen mole fractions of 10, 5, and 1 % in the gas phase were tested in order to gain a better understanding of the redox properties of ceria and the mechanism of the catalytic oxidation of carbon black. Both isothermal and temperature programmed runs are performed to extract kinetic parameters, such as activation energy and reaction order with respect to oxygen partial pressure. The experimental data are used to propose a model of CB oxidation in the presence of CeO~2~ allowing the simulation of carbon oxidation.

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