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Ceria and Gold/Ceria Catalysts for the Abatement of Polycyclic Aromatic Hydrocarbons: An In Situ DRIFTS Study

Solsona, Benjamin Espriu, Garcia, T., Murillo, R., Mastral, A. M., Ndifor, Ntainjua Edwin., Hetrick, C. E., Amiridis, M. D. and Taylor, Stuart Hamilton 2009. Ceria and Gold/Ceria Catalysts for the Abatement of Polycyclic Aromatic Hydrocarbons: An In Situ DRIFTS Study. Topics in Catalysis 52 (5) , pp. 492-500. 10.1007/s11244-009-9184-6

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Abstract

Gold catalysts supported on nano-crystalline ceria prepared by deposition precipitation have been characterised and tested for the total oxidation of naphthalene. Two different precipitation methods were used to prepare the nano-crystalline ceria supports and it was observed that although both supports were active materials for naphthalene oxidation, ceria synthesized by homogeneous precipitation with urea was markedly more active than CeO 2 precipitated by carbonate. The addition of gold to both active CeO2 catalysts resulted in different effects for the total oxidation of naphthalene. Gold addition promotes the naphthalene conversion to CO 2 when ceria is prepared by precipitation with carbonates, whilst the light off temperature is shifted towards higher temperatures when gold is added to ceria synthesized by the urea method. This behaviour has been related to a change in the support characteristics and a removal of the carbonate surface species, when gold is deposited onto the ceria support. © Springer Science+Business Media, LLC 2009.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Uncontrolled Keywords: Author keywords: Catalytic total oxidation; Ceria; Gold; Polycyclic aromatic hydrocarbons Index Keywords: Active material; Carbonate surfaces; Ceria; Deposition precipitation; Different effects; Gold catalysts; Higher temperatures; Homogeneous Precipitation; In-situ; Light off; Nanocrystallines; Naphthalene conversion; Naphthalene oxidation; Polycyclic aromatics; Precipitation methods; Total oxidation Engineering controlled terms: Aromatization; Catalysts; Catalytic oxidation; Cerium compounds; Crystalline materials; Gold; Gold coatings; Gold deposits; Metabolism; Naphthalene; Polycyclic aromatic hydrocarbons; Precipitation (chemical); Urea Engineering main heading: Aromatic hydrocarbons
Additional Information: cited by (since 1996) 5
Publisher: Baltzer Science Publishers B.V.
ISSN: 1022-5528
Last Modified: 18 Oct 2017 12:54
URI: http://orca.cf.ac.uk/id/eprint/6132

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