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The Influence of platinum addition on nano-crystalline ceria catalysts for the total oxidation of naphthalene a model polycyclic aromatic hydrocarbon

Ntainjua Ndifor, Edwin, Davies, Thomas Edward, Garcia, Tomas, Solsona, Benjamin Espriu and Taylor, Stuart Hamilton 2011. The Influence of platinum addition on nano-crystalline ceria catalysts for the total oxidation of naphthalene a model polycyclic aromatic hydrocarbon. Catalysis Letters 141 (12) , pp. 1732-1738. 10.1007/s10562-011-0710-3

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Abstract

The effect of adding Pt to a highly active ceria polycyclic aromatic hydrocarbon total oxidation catalyst has been investigated for the oxidation of naphthalene. The addition of Pt to ceria suppressed the performance of the catalyst for total oxidation. The addition of Pt reduced catalyst surface area, decreased the ceria crystallite size, decreased the concentration of ceria defects and increased the reducibility of the catalyst. The suppression of activity has been attributed to strong metal-support interaction between Pt and ceria, which limits the availability of lattice oxygen for the oxidation process, which follows the Mars-Van Krevelen redox mechanism in the absence of Pt. It is postulated that the presence of dispersed Pt, alters the mechanism of naphthalene oxidation over the ceria catalyst.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Subjects: Q Science > QD Chemistry
Uncontrolled Keywords: PAHs ; VOCs ; Catalytic oxidation ; Ceria ; Platinum
Publisher: SpringerLink
ISSN: 1011-372X
Last Modified: 20 Oct 2017 19:26
URI: http://orca.cf.ac.uk/id/eprint/12039

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